MCQs 4 Exams - MCQs 4 Exams

MCQs on Computer Software [Set – 2]

MCQs on Computer Software [Set – 2] 1. What is the primary purpose of a bootloader in system software? A) Encrypt sensitive data securelyB) Initialize the operating systemC) Monitor background processesD) Manage system memory allocation Show Answer Correct Answer: B) Initialize the operating systemExplanation: A bootloader is a small program that loads the operating system into memory when a computer is started, enabling system functionality. 2. Which type of software prevents unauthorized access to computer systems? A) Firewall and security toolsB) Data recovery utilitiesC) Multimedia editing softwareD) Spreadsheet management tools Show Answer Correct Answer: A) Firewall and security toolsExplanation: Firewalls monitor and control incoming and outgoing network traffic, preventing unauthorized access to systems and networks. 3. What is the function of encryption software in data protection? A) Secure data by converting it into unreadable codeB) Organize and analyze stored informationC) Manage file system operations efficientlyD) Restore lost data after accidental deletion Show Answer Correct Answer: A) Secure data by converting it into unreadable codeExplanation: Encryption software transforms data into encrypted code, which can only be accessed using a decryption key, ensuring data confidentiality. 4. Which software type is used to emulate other operating systems or environments? A) Email and communication platformsB) Multimedia presentation programsC) Graphic design and editing softwareD) Virtualization and emulator tools Show Answer Correct Answer: D) Virtualization and emulator toolsExplanation: Virtualization software creates a virtual environment for running other operating systems or platforms on the host machine. 5. What is the role of configuration management software in IT systems? A) Monitor real-time system performanceB) Create secure file storage solutionsC) Track and manage system changesD) Manage customer information efficiently Show Answer Correct Answer: C) Track and manage system changesExplanation: Configuration management software ensures system consistency by tracking changes, automating updates, and managing configurations. 6. What is the main purpose of word processing software? A) Secure data using encryption methodsB) Manage large datasets effectivelyC) Edit and format text documentsD) Monitor project progress and deadlines Show Answer Correct Answer: C) Edit and format text documentsExplanation: Word processing software is used for creating, editing, and formatting text-based documents, making it a key office productivity tool. 7. Which software is used for creating and editing spreadsheets? A) Spreadsheet and calculation toolsB) Multimedia and presentation softwareC) Word processing and design programsD) Data encryption and recovery utilities Show Answer Correct Answer: A) Spreadsheet and calculation toolsExplanation: Spreadsheet software helps users organize data, perform calculations, and create charts, commonly used in data analysis. 8. What is the role of presentation software in office applications? A) Organize and analyze system filesB) Secure sensitive data from threatsC) Create visual slides for communicationD) Monitor network activity and traffic Show Answer Correct Answer: C) Create visual slides for communicationExplanation: Presentation software enables users to design slide-based presentations for effective communication, often used in business and education. 9. Which type of software is used to create and manage databases? A) Database management toolsB) Graphic design applicationsC) Video editing utilitiesD) Spreadsheet and analysis software Show Answer Correct Answer: A) Database management toolsExplanation: Database management software (DBMS) helps users create, manage, and query databases, allowing structured data storage and retrieval. 10. What is the primary purpose of customer relationship management (CRM) software? A) Encrypt and secure sensitive recordsB) Monitor employee performance dataC) Manage interactions with customersD) Track and manage office expenses Show Answer Correct Answer: C) Manage interactions with customersExplanation: CRM software helps businesses improve customer relationships by tracking interactions, managing contacts, and analyzing customer data. 11. Which software tool is used to edit and manipulate images? A) Photo editing and graphic toolsB) Spreadsheet and accounting programsC) System diagnostics utilitiesD) Text-based word processors Show Answer Correct Answer: A) Photo editing and graphic toolsExplanation: Photo editing software enables users to enhance, manipulate, and transform digital images, widely used in creative industries. 12. What is the role of accounting software in business operations? A) Monitor real-time network activityB) Organize customer relationship dataC) Track financial transactions and expensesD) Secure sensitive business records Show Answer Correct Answer: C) Track financial transactions and expensesExplanation: Accounting software simplifies bookkeeping by tracking income, expenses, and generating financial reports for businesses. 13. Which software type is used to develop multimedia presentations? A) Presentation and design toolsB) Word processing utilitiesC) Spreadsheet and analysis softwareD) File management programs Show Answer Correct Answer: A) Presentation and design toolsExplanation: Multimedia presentation software integrates text, graphics, audio, and video to create dynamic presentations. 14. What is the function of project management software in team collaboration? A) Create and edit graphic illustrationsB) Secure system configurationsC) Track system hardware performanceD) Monitor and schedule project tasks Show Answer Correct Answer: D) Monitor and schedule project tasksExplanation: Project management software helps teams collaborate by tracking tasks, timelines, and resources, ensuring project goals are met. 15. Which type of software is used to create and edit vector graphics? A) Vector-based design softwareB) Data analytics for visualizationsC) Word processing tools for documentationD) Compression programs for file storage Show Answer Correct Answer: A) Vector-based design softwareExplanation: Vector graphics tools, such as Adobe Illustrator, create scalable images ideal for logos, illustrations, and graphic designs. 16. What is the primary purpose of desktop publishing software? A) Encrypt sensitive corporate documentsB) Render animations and 3D graphicsC) Produce high-quality printed materialsD) Manage databases with complex queries Show Answer Correct Answer: C) Produce high-quality printed materialsExplanation: Desktop publishing tools like InDesign allow users to design and layout print materials such as magazines, brochures, and flyers. 17. Which software is commonly used for video editing and post-production? A) Word processing tools for scriptsB) Non-linear editing softwareC) Spreadsheet applications for analysisD) Data recovery utilities for lost files Show Answer Correct Answer: B) Non-linear editing softwareExplanation: Non-linear editors, like Adobe Premiere Pro, enable complex video editing and post-production, including transitions, effects, and audio syncing. 18. What is the role of simulation software in scientific research? A) Organize tasks for research teamsB) Encrypt sensitive experimental dataC) Model real-world scenarios digitallyD) Produce reports from raw data Show Answer Correct Answer: C) Model real-world scenarios digitallyExplanation: Simulation software replicates real-world processes, allowing scientists

MCQs on Computer Software [Set – 1]

MCQs Computer Software, MCQs Computer

MCQs on Computer Software [Set – 1] 1. What is the primary function of an operating system in a computer? A) Store user data securelyB) Execute system commandsC) Protect against malwareD) Manage system resources Show Answer Correct Answer: D) Manage system resourcesExplanation: The operating system oversees the use of hardware and software resources, ensuring processes and applications run efficiently. 2. Which type of software provides an interface between the user and the hardware? A) Application softwareB) Operating systemC) Network protocolsD) Security programs Show Answer Correct Answer: B) Operating systemExplanation: The operating system enables user interaction with hardware through a user interface and manages underlying operations. 3. What is the role of a file system in an operating system? A) Perform system backupsB) Allocate memory spacesC) Organize stored filesD) Encrypt sensitive data Show Answer Correct Answer: C) Organize stored filesExplanation: A file system manages how data is stored and accessed on storage devices, enabling efficient file organization and retrieval. 4. Which type of software is responsible for managing and allocating resources to processes? A) System utilitiesB) Operating systemC) Device driversD) File manager Show Answer Correct Answer: B) Operating systemExplanation: The operating system allocates CPU, memory, and I/O resources to various running processes, ensuring smooth operation. 5. What is the primary function of utility software in a computer system? A) Manage system updatesB) Perform specific maintenance tasksC) Execute user commandsD) Control hardware devices Show Answer Correct Answer: B) Perform specific maintenance tasksExplanation: Utility software helps optimize system performance, diagnose issues, and manage tasks like cleaning or defragmentation. 6. Which software provides the user interface for accessing and managing computer files? A) File managerB) Antivirus toolC) Web browserD) Device drivers Show Answer Correct Answer: A) File managerExplanation: A file manager enables users to view, organize, and manage files and folders stored on a computer system. 7. What is the purpose of device driver software? A) Protect system filesB) Enable communication with hardwareC) Enhance graphical renderingD) Backup user data Show Answer Correct Answer: B) Enable communication with hardwareExplanation: Device drivers act as translators between the operating system and hardware components, ensuring proper functionality. 8. Which type of software is used to perform system diagnostics and maintenance? A) Antivirus toolsB) System utilitiesC) Operating kernelD) Network protocols Show Answer Correct Answer: B) System utilitiesExplanation: System utility software is designed to perform diagnostic tests and maintain the computer’s performance and health. 9. What is the role of middleware in computer systems? A) Connect different software applicationsB) Secure system resourcesC) Encrypt user passwordsD) Organize system files Show Answer Correct Answer: A) Connect different software applicationsExplanation: Middleware facilitates communication and integration between different applications, often in distributed systems. 10. Which software is specifically designed to convert data into actionable information? A) Spreadsheet toolsB) Data analytics softwareC) System utilitiesD) File managers Show Answer Correct Answer: B) Data analytics softwareExplanation: Data analytics tools process raw data and present insights that can guide decisions or strategies. 11. What is the function of a software patch in system updates? A) Add new hardware driversB) Remove unused applicationsC) Fix security vulnerabilitiesD) Compress large files Show Answer Correct Answer: C) Fix security vulnerabilitiesExplanation: Software patches address bugs, enhance security, and sometimes add minor updates to improve system functionality. 12. Which type of software handles disk fragmentation in an operating system? A) Backup utilitiesB) File managersC) Antivirus programsD) Defragmentation tools Show Answer Correct Answer: D) Defragmentation toolsExplanation: Defragmentation tools reorganize fragmented data on a disk to improve read/write efficiency and performance. 13. What is the role of antivirus software in a computer system? A) Manage memory usageB) Update software driversC) Backup important dataD) Detect and remove malware Show Answer Correct Answer: D) Detect and remove malwareExplanation: Antivirus software scans the system for viruses and malicious programs, removing threats to protect data and functionality. 14. Which software tool is used to monitor and terminate processes in a computer system? A) Task managerB) File explorerC) System utilitiesD) Device drivers Show Answer Correct Answer: A) Task managerExplanation: Task managers allow users to monitor active processes and terminate unresponsive or unnecessary tasks to free resources. 15. What is the purpose of a scheduler in operating system software? A) Encrypt sensitive filesB) Manage task execution orderC) Backup system logsD) Monitor hardware usage Show Answer Correct Answer: B) Manage task execution orderExplanation: The scheduler determines the order in which processes are executed based on priority and system resources. 16. Which type of software is used to compress and decompress files? A) File managerB) Compression toolsC) System utilitiesD) Antivirus programs Show Answer Correct Answer: B) Compression toolsExplanation: Compression tools reduce file sizes for storage or transfer and decompress them when needed for use. 17. What is the function of a backup utility in software systems? A) Create copies of important dataB) Restore system updatesC) Manage network settingsD) Encrypt sensitive files Show Answer Correct Answer: A) Create copies of important dataExplanation: Backup utilities safeguard against data loss by creating secure copies of files and system configurations. 18. Which type of software is responsible for managing virtual memory? A) Operating systemB) Data analytics toolsC) Task managerD) File manager Show Answer Correct Answer: A) Operating systemExplanation: The operating system uses virtual memory to extend physical RAM by temporarily storing data on the hard drive. 19. What is the role of software in managing system logs and alerts? A) Monitor hardware usageB) Compress system dataC) Record system eventsD) Allocate disk space Show Answer Correct Answer: C) Record system eventsExplanation: Logging software records system events and generates alerts to help administrators monitor performance and detect issues. 20. Which software is used to ensure secure deletion of sensitive files? A) Antivirus toolsB) File shredder programsC) Defragmentation utilitiesD) System utilities Show Answer Correct Answer: B) File shredder programsExplanation: File shredders permanently delete sensitive data by overwriting it, making it unrecoverable. ! 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MCQs on Percentages [Set – 6]

MCQs Percentages, MCQs Aptitude

MCQs on Percentages [Set – 6] 1. The number of visitors to a park increased by 20% in the first year and by 30% in the second year. What is the overall percentage increase in the number of visitors over the two years? A) 50%B) 56%C) 60%D) 44% Show Answer Correct Answer: B) 56%Explanation:Let the initial number of visitors be 100 .After a 20% increase: 100 times 1.20 = 120 After a 30% increase on 120: 120 times 1.30 = 156 Overall increase = 156 – 100 = 56% . 2. A price is increased by 15% and then decreased by 10%. What is the net percentage increase or decrease in the price? A) 3.5% increaseB) 4% increaseC) 2% decreaseD) 5% decrease Show Answer Correct Answer: A) 3.5% increaseExplanation:Let the original price be 100 .After a 15% increase: 100 times 1.15 = 115 Then a 10% decrease on 115: 115 times 0.90 = 103.5 Net change = 103.5 – 100 = 3.5% increase. 3. If a student scores 72 out of 90 in a test, what is his percentage score? A) 70%B) 80%C) 85%D) 90% Show Answer Correct Answer: B) 80%Explanation:Percentage score = frac{72}{90} times 100 = 80% . 4. The price of an item was ₹3,000, but due to a special offer, it was sold for ₹2,400. What percentage discount was offered on the item? A) 10%B) 15%C) 20%D) 25% Show Answer Correct Answer: C) 20%Explanation:Discount percentage = frac{3000 – 2400}{3000} times 100 = 20% . 5. In a certain election, 75% of the total eligible voters voted. If 60,000 voters cast their vote, how many eligible voters were there? A) 70,000B) 75,000C) 80,000D) 90,000 Show Answer Correct Answer: B) 75,000Explanation:Let the total number of eligible voters be x .Then, 0.75x = 60000 x = frac{60000}{0.75} = 75000 . 6. A person’s monthly expenses are ₹18,000, which is 80% of his income. What is his total monthly income? A) ₹20,000B) ₹22,500C) ₹25,000D) ₹30,000 Show Answer Correct Answer: C) ₹25,000Explanation:Let the income be x . Then, 0.80x = 18000 x = frac{18000}{0.80} = 25000 . 7. A company’s revenue increased from ₹8,00,000 to ₹9,60,000 in a year. What is the percentage increase in the company’s revenue? A) 10%B) 15%C) 20%D) 25% Show Answer Correct Answer: C) 20%Explanation:Percentage increase = frac{960000 – 800000}{800000} times 100 = 20% . 8. The price of gold increased by 8% in a year. If the price at the beginning of the year was ₹45,000 per 10 grams, what is the price at the end of the year? A) ₹48,600B) ₹48,400C) ₹47,800D) ₹49,000 Show Answer Correct Answer: A) ₹48,600Explanation:Price at the end of the year = 45000 times 1.08 = 48600 . 9. A student’s marks decreased by 15%. If he scored 170 marks initially, what are his new marks after the decrease? A) 140B) 144.5C) 145D) 153 Show Answer Correct Answer: D) 153Explanation:New marks = 170 times 0.85 = 153 . 10. If the price of a product is reduced by 20% and the new price is ₹800, what was the original price of the product? A) ₹900B) ₹1,000C) ₹1,050D) ₹1,200 Show Answer Correct Answer: B) ₹1,000Explanation:Let the original price be x . 0.80x = 800 x = frac{800}{0.80} = 1000 . 11. A company has 600 employees, out of which 30% are women. How many women work in the company? A) 150B) 180C) 200D) 210 Show Answer Correct Answer: B) 180Explanation:Number of women = 600 times 0.30 = 180 . 12. A sum of ₹9,000 is divided between two people in the ratio 3:2. What percentage of the total amount does the smaller share represent? A) 30%B) 40%C) 50%D) 60% Show Answer Correct Answer: B) 40%Explanation:The smaller share is frac{2}{5} times 9000 = 3600 .Percentage of total = frac{3600}{9000} times 100 = 40% . 13. The cost of a machine depreciates by 8% annually. If the machine was purchased for ₹2,00,000, what will be its value after 2 years? A) ₹1,68,400B) ₹1,68,200C) ₹1,70,000D) ₹1,78,000 Show Answer Correct Answer: A) ₹1,68,400Explanation:Value after 2 years = 200000 times (1 – 0.08)^2 = 200000 times 0.92 times 0.92 = 168400 . 14. If 60% of a number is equal to 480, what is 85% of the same number? A) 640B) 680C) 700D) 720 Show Answer Correct Answer: D) 720Explanation:Let the number be x . 0.60x = 480 x = frac{480}{0.60} = 800 So, 85% of x = 800 times 0.85 = 720 . 15. A person’s salary increased by 12% and became ₹56,000. What was the salary before the increase? A) ₹50,000B) ₹48,000C) ₹52,000D) ₹46,000 Show Answer Correct Answer: A) ₹50,000Explanation:Let the original salary be x . x times 1.12 = 56000 x = frac{56000}{1.12} = 50000 . 16. A company reduced the price of its product by 25% to boost sales. If the original price was ₹20,000, what is the new price? A) ₹15,000B) ₹14,500C) ₹16,000D) ₹18,000 Show Answer Correct Answer: C) ₹15,000Explanation:New price after a 25% reduction = 20000 times 0.75 = 15000 . 17. A student scored 90 marks in a subject, which is 75% of the total marks. What are the total marks for the subject? A) 100B) 120C) 150D) 200 Show Answer Correct Answer: B) 120Explanation:Let the total marks be x . Then, 0.75x = 90 . x = frac{90}{0.75} = 120 . 18. If a population increases by 10% every year, by what percentage will it increase in 2 years? A) 20%B) 21%C) 22%D) 25% Show Answer Correct Answer: B) 21%Explanation:Overall increase over 2 years = (1.10 times 1.10) – 1 = 0.21 , or 21%. 19. A person’s weight decreased from 80 kg to 68 kg in 6 months. What is the percentage decrease in his weight? A) 10%B) 12%C) 15%D) 20% Show Answer Correct Answer: D) 20%Explanation:Percentage decrease = frac{80 – 68}{80} times 100 = 20% . 20. If 5% of a sum of money is ₹1,000, what is 85% of the same sum? A) ₹16,000B) ₹17,000C) ₹18,000D) ₹19,000 Show Answer Correct Answer: B) ₹17,000Explanation:Let the total sum

MCQs on Percentages [Set – 5]

MCQs Percentages, MCQs Aptitude

MCQs on Percentages [Set – 5] 1. The salary of a person is increased by 20% and then decreased by 15%. What is the final percentage increase or decrease? A) 5% increaseB) 2% increaseC) 3% decreaseD) 1% increase Show Answer Correct Answer: B) 2% increaseExplanation:Let the initial salary be 100 .After a 20% increase: 100 times 1.20 = 120 After a 15% decrease: 120 times 0.85 = 102 Net percentage change = 102 – 100 = 2% increase. 2. A population increases by 10% every year. If the present population is 60,000, what will the population be after 3 years? A) 79,860B) 80,760C) 79,260D) 81,060 Show Answer Correct Answer: A) 79,860Explanation:Population after 3 years = 60000 times (1.10)^3 = 60000 times 1.331 = 79,860 . 3. If a person spends 75% of his income and saves ₹7,500, what is his total income? A) ₹25,000B) ₹30,000C) ₹35,000D) ₹40,000 Show Answer Correct Answer: B) ₹30,000Explanation:If 25% of income is saved, then let income be x . 0.25x = 7500 x = frac{7500}{0.25} = 30000 . 4. A number is first increased by 12%, then decreased by 8%, and finally increased by 15%. What is the net percentage change? A) 15.78% increaseB) 17.56% increaseC) 18.78% increaseD) 19.56% increase Show Answer Correct Answer: D) 19.56% increaseExplanation:Let the original number be 100 .After a 12% increase: 100 times 1.12 = 112 After an 8% decrease: 112 times 0.92 = 103.04 After a 15% increase: 103.04 times 1.15 = 118.56 Net change = 118.56 – 100 = 18.56% increase. 5. The population of a town decreases by 6% annually. If the present population is 1,50,000, what will the population be after 2 years? A) 1,32,600B) 1,32,480C) 1,40,000D) 1,33,200 Show Answer Correct Answer: A) 1,32,600Explanation:Population after 2 years = 150000 times (1 – 0.06)^2 = 150000 times 0.8836 = 132600 . 6. A salary is increased by 25% and then decreased by 15%. What is the overall percentage change? A) 6.25% increaseB) 7.5% increaseC) 8.5% increaseD) 10% increase Show Answer Correct Answer: A) 6.25% increaseExplanation:Let the initial salary be 100 .After a 25% increase: 100 times 1.25 = 125 Then, a 15% decrease: 125 times 0.85 = 106.25 Net percentage change = 106.25 – 100 = 6.25% increase. 7. If the cost of a product increases by 20% and then decreases by 25%, what is the net percentage change? A) 5% decreaseB) 10% decreaseC) 12% decreaseD) 15% decrease Show Answer Correct Answer: A) 5% decreaseExplanation:Let the initial cost be 100 .After a 20% increase: 100 times 1.20 = 120 Then, a 25% decrease: 120 times 0.75 = 90 Net percentage change = 90 – 100 = -10% decrease. 8. A person spends 60% of his income. If his income increases by 30% and his expenditure increases by 20%, what is the percentage increase in his savings? A) 20%B) 50%C) 45%D) 55% Show Answer Correct Answer: B) 50%Explanation:Let initial income be 100 , so initial savings = 40 .If income increases by 30%, new income = 100 times 1.30 = 130 .If expenditure increases by 20%, new expenditure = 60 times 1.20 = 72 .New savings = 130 – 72 = 58 .Percentage increase in savings = frac{58 – 40}{40} times 100 = 45% . 9. A price is increased by 40% and then decreased by 30%. What is the net percentage change? A) 5% increaseB) 8% increaseC) 2% decreaseD) 10% increase Show Answer Correct Answer: C) 2% decreaseExplanation:Let the initial price be 100 .After a 40% increase: 100 times 1.40 = 140 Then a 30% decrease: 140 times 0.70 = 98 Net percentage change = 98 – 100 = -2% . 10. If 25% of a number is 125, what is 200% of the same number? A) 800B) 1100C) 900D) 700 Show Answer Correct Answer: A) 800Explanation:Let the number be x .Since 25% of x is 125, we have: 0.25x = 125 x = frac{125}{0.25} = 500 Then, 200% of x = 500 times 2 = 800 . 11. A student scores 75 marks in an exam, which is 50% of the total marks. What are the total marks? A) 150B) 160C) 140D) 170 Show Answer Correct Answer: A) 150Explanation:Let the total marks be x .Since 50% of x is 75: 0.50x = 75 x = frac{75}{0.50} = 150 . 12. The price of a product is increased by 15%, and then reduced by 20%. What is the final percentage change? A) 8% increaseB) 7% decreaseC) 5% decreaseD) 2% decrease Show Answer Correct Answer: C) 5% decreaseExplanation:Let the original price be 100 .After a 15% increase: 100 times 1.15 = 115 After a 20% decrease: 115 times 0.80 = 92 Net percentage change = 92 – 100 = -8% . 13. A population increases by 7% every year. If the current population is 85,000, what will be the population after 2 years? A) 97,375B) 97,175C) 97,345D) 97,850 Show Answer Correct Answer: B) 97,175Explanation:Population after 2 years = 85000 times (1.07)^2 = 85000 times 1.1449 = 97175 . 14. If 60% of a number is 300, what is 90% of the number? A) 450B) 400C) 500D) 550 Show Answer Correct Answer: A) 450Explanation:Let the number be x .Since 60% of x is 300, we have: 0.60x = 300 x = frac{300}{0.60} = 500 Then, 90% of x = 500 times 0.90 = 450 . 15. A car’s value depreciates by 10% annually. What will be its value after 2 years if its present value is ₹8,00,000? A) ₹4,72,000B) ₹5,48,000C) ₹6,28,000D) ₹6,48,000 Show Answer Correct Answer: D) ₹6,48,000Explanation:Value after 2 years = 800000 times (1 – 0.10)^2 = 800000 times 0.81 = 648000 . 16. A student scores 35% in an exam and fails by 30 marks. If the pass percentage is 40%, find the total marks. A) 400B) 500C) 700D) 300 Show Answer Correct Answer: A) 400Explanation:Let the total marks be x .If the pass mark is 40%, then 35% of total marks is 30 marks less than 40%: 0.40x – 0.35x = 30 x = frac{30}{0.05}

MCQs on Percentages [Set – 4]

MCQs Percentages, MCQs Aptitude

MCQs on Percentages [Set – 4] 1. If a number is first increased by 25% and then decreased by 20%, what is the net percentage change? A) 0%B) 2% increaseC) 5% increaseD) 10% decrease Show Answer Correct Answer: B) 2% increaseExplanation:Let the original number be 100 .After a 25% increase: 100 times 1.25 = 125 .Then, a 20% decrease on 125: 125 times 0.80 = 100 = 125 2. A shopkeeper marks his goods 50% above the cost price and then offers a discount of 20%. What is his percentage profit or loss? A) 20% profitB) 25% profitC) 30% profitD) 40% profit Show Answer Correct Answer: A) 20% profitExplanation:Let the cost price be 100 .Marked price with a 50% markup becomes 100 times 1.50 = 150 .After offering a 20% discount on the marked price: 150 times 0.80 = 120 .Thus, the selling price is 120 , resulting in a profit of: 120 – 100 = 20 , or a 20% profit. 3. If 35% of a number is 84, what is the number? A) 200B) 240C) 300D) 280 Show Answer Correct Answer: B) 240Explanation:Let the number be x .Since 35% of x is 84, we have: 0.35 times x = 84 x = frac{84}{0.35} = 240 . 4. A man’s salary is first increased by 10%, then decreased by 5%, and again increased by 8%. What is the net percentage change? A) 10.26% increaseB) 12.26% increaseC) 10.26% increaseD) 8.26% increase Show Answer Correct Answer: A) 10.26% increaseExplanation:Let the initial salary be 100 .After a 10% increase: 100 times 1.10 = 110 After a 5% decrease: 110 times 0.95 = 104.5 After an 8% increase: 104.5 times 1.08 = 112.86 Net percentage change = 112.86 – 100 = 12.86% . 5. A student scores 60% marks in an exam. If the passing marks are 300, and the student scores 180 marks, by how many marks did the student fail? A) 90B) 100C) 110D) 120 Show Answer Correct Answer: D) 120Explanation:If passing marks are 300 and the student scored 180, the difference is: 300 – 180 = 120 . 6. The population of a village increases by 12% in the first year and decreases by 5% in the second year. What is the net percentage change in population? A) 6.4% increaseB) 5.6% increaseC) 7.1% increaseD) 8.5% increase Show Answer Correct Answer: A) 6.4% increaseExplanation:Let the initial population be 100 .After a 12% increase: 100 times 1.12 = 112 After a 5% decrease: 112 times 0.95 = 106.4 Net change = 106.4 – 100 = 6.4% increase. 7. A man invests ₹12,000 in a business and earns a profit of 20%. What is his profit in rupees? A) ₹2,400B) ₹2,300C) ₹2,200D) ₹2,500 Show Answer Correct Answer: A) ₹2,400Explanation:Profit = 12000 times 0.20 = 2400 . 8. A student needs 40% to pass an exam. If the total marks are 800 and the student gets 320 marks, by how many marks did the student fail? A) 0B) 40C) 60D) 80 Show Answer Correct Answer: A) 0Explanation:The pass mark required is 40% of 800, which is 0.40 times 800 = 320 . Since the student scored exactly 320 marks, they passed the exam and did not fail. 9. A price is first increased by 50%, then decreased by 30%, and again increased by 20%. What is the overall percentage change? A) 10% increaseB) 15% increaseC) 20% increaseD) 30% increase Show Answer Correct Answer: C) 20% increaseExplanation:Let the original price be 100 .After a 50% increase: 100 times 1.50 = 150 Then a 30% decrease: 150 times 0.70 = 105 Then a 20% increase: 105 times 1.20 = 126 Net percentage change = 126 – 100 = 26% increase. 10. If 70% of a number is 210, what is 120% of the same number? A) 320B) 360C) 280D) 300 Show Answer Correct Answer: B) 360Explanation:Let the number be x . 0.70x = 210 , so x = frac{210}{0.70} = 300 .Then, 120% of the number is 1.20 times 300 = 360 . 11. A number is first decreased by 15%, then increased by 25%, and again decreased by 20%. What is the net percentage change? A) 10% decreaseB) 5% decreaseC) 5% increaseD) 12% increase Show Answer Correct Answer: B) 5% decreaseExplanation:Let the original number be 100 .After a 15% decrease: 100 times 0.85 = 85 Then a 25% increase: 85 times 1.25 = 106.25 Then a 20% decrease: 106.25 times 0.80 = 85 Net percentage change = 85 – 100 = -5% decrease. 12. A student scored 80 marks in an exam. If this is 40% of the total marks, what are the total marks? A) 160B) 180C) 200D) 210 Show Answer Correct Answer: C) 200Explanation:Let the total marks be x . 0.40x = 80 , so x = frac{80}{0.40} = 200 . 13. A salary is increased by 20% and then reduced by 10%. What is the final percentage increase or decrease in the salary? A) 8% increaseB) 10% increaseC) 5% increaseD) 2% decrease Show Answer Correct Answer: A) 8% increaseExplanation:Let the original salary be 100 .After a 20% increase: 100 times 1.20 = 120 Then a 10% decrease: 120 times 0.90 = 108 Net percentage change = 108 – 100 = 8% increase. 14. If the price of a commodity increases by 20%, how much less quantity can be bought with ₹1,200, which was previously used to buy 50 kg? A) 5 kgB) 8 kgC) 10 kgD) 12 kg Show Answer Correct Answer: C) 10 kgExplanation:With a 20% price increase, the new price per kg is 1.20 times the old price.New quantity = frac{50}{1.20} = 41.67 kg.The reduction in quantity = 50 – 41.67 = 8.33 , approximately 10 kg. 15. A population decreases by 8% annually. If the current population is 40,000, what will the population be after 3 years? A) 32,768B) 30,500C) 31,104D) 33,000 Show Answer Correct Answer: C) 31,104Explanation:Population after 3 years = 40000 times (1 – 0.08)^3 = 31,104 . 16. A trader marks his goods 40% above

MCQs on Percentages [Set – 3]

MCQs Percentages, MCQs Aptitude

MCQs on Percentages [Set – 3] 1. A’s salary is 30% less than B’s salary, and B’s salary is 40% more than C’s salary. What percentage of C’s salary is A’s salary? A) 91%B) 84%C) 78%D) 70% Show Answer Correct Answer: C) 78%Explanation:Let C’s salary be 100 . Then B’s salary is 140 (40% more).A’s salary is 30% less than B’s: 140 times 0.70 = 98 .Thus, A’s salary is 78% of C’s salary. 2. If the population of a city is 2,00,000 and it increases by 10% per year, what will be the population after 3 years? A) 2,42,000B) 2,46,200C) 2,66,200D) 2,68,000 Show Answer Correct Answer: B) 2,66,200Explanation:Population after 3 years = 200,000 times (1.10)^3 = 2,66,200 3. The price of an article is increased by 15% and then decreased by 10%. What is the overall percentage change in the price? A) 3.5% increaseB) 3.5% decreaseC) 5% increaseD) 4.5% decrease Show Answer Correct Answer: A) 3.5% increaseExplanation:Let the original price be 100 .After a 15% increase: 100 times 1.15 = 115 After a 10% decrease on 115: 115 times 0.90 = 103.5 Net change = 3.5% increase. 4. A person spends 60% of his income. If his income increases by 25% and his expenditure increases by 15%, what is the percentage increase in his savings? A) 30%B) 40%C) 50%D) 60% Show Answer Correct Answer: C) 50%Explanation:If he initially spends 60%, he saves 40%. Let income be 100 .After a 25% income increase: 100 times 1.25 = 125 .Expenditure becomes 60 times 1.15 = 69 .New savings = 125 – 69 = 56 , which is a 50% increase. 5. A product is marked 20% above the cost price and then sold at a discount of 15%. What is the net percentage profit or loss? A) 2% profitB) 3% profitC) 5% profitD) 2% loss Show Answer Correct Answer: B) 3% profitExplanation:Let cost price be 100 .Marked price = 120 . After a 15% discount: 120 times 0.85 = 102 .Net profit = 102 – 100 = 3% 6. If 30% of a number is added to 60, the result is the number itself. Find the number. A) 82.71B) 83.31C) 84.31D) 85.71 Show Answer Correct Answer: D) 85.71Explanation:Let the number be x .Then, 0.30x + 60 = x x = frac{60}{0.70} = 85.71 7. The population of a town increased by 8% in the first year and decreased by 5% in the second year. What is the net percentage change in population over the two years? A) 2.6% increaseB) 3.4% increaseC) 4.1% increaseD) 2.9% increase Show Answer Correct Answer: A) 2.6% increaseExplanation:Let initial population be 100 .After an 8% increase: 100 times 1.08 = 108 Then, a 5% decrease on 108: 108 times 0.95 = 102.6 Net change = 2.6% increase. 8. If the price of a commodity decreases by 20%, how many kilograms of that commodity can be bought for ₹1,600, which was earlier sufficient to buy 50 kg? A) 60.5 kgB) 62.5 kgC) 65.5 kgD) 75 kg Show Answer Correct Answer: B) 62.5 kgExplanation:With a 20% decrease, the new price per kg is 0.80 times text{old price} .If ₹1,600 buys 50 kg at the old price, at the new price it buys 50 times frac{100}{80} = 62.5 kg. 9. A man’s salary is increased by 12% and then decreased by 10%. What is the overall percentage change in his salary? A) 1.8% increaseB) 2.2% decreaseC) 3% increaseD) 1% decrease Show Answer Correct Answer: A) 1.8% increaseExplanation:Let the original salary be 100 .After a 12% increase: 100 times 1.12 = 112 Then a 10% decrease on 112: 112 times 0.90 = 100.8 Net change = 1.8% increase. 10. A number is first increased by 50%, and then the result is decreased by 20%. What is the final percentage change? A) 20% increaseB) 30% increaseC) 40% increaseD) 10% increase Show Answer Correct Answer: B) 30% increaseExplanation:Let the original number be 100 .After a 50% increase: 100 times 1.50 = 150 Then, a 20% decrease on 150: 150 times 0.80 = 120 Net change = 30% increase. 11. If 25% of a number is subtracted from itself, the result is 450. Find the number. A) 400B) 450C) 500D) 550 Show Answer Correct Answer: C) 500Explanation:Let the number be x .Then, x – 0.25x = 450 0.75x = 450 Rightarrow x = frac{450}{0.75} = 600 12. The salary of a person is increased by 20% and then decreased by 10%. What is the final percentage increase or decrease? A) 8% increaseB) 10% increaseC) 8% decreaseD) 5% increase Show Answer Correct Answer: A) 8% increaseExplanation:Let the original salary be 100 .After a 20% increase: 100 times 1.20 = 120 Then, a 10% decrease on 120: 120 times 0.90 = 108 Net change = 8% increase. 13. In a school, 40% of students are girls. If there are 300 boys, how many students are there in the school? A) 500B) 600C) 700D) 800 Show Answer Correct Answer: B) 500Explanation:Let the total number of students be x .Since 60% are boys: 0.60x = 300 Rightarrow x = frac{300}{0.60} = 500 14. A price is increased by 35% and then decreased by 20%. What is the net percentage change in price? A) 10% increaseB) 12% increaseC) 8% increaseD) 15% increase Show Answer Correct Answer: B) 12% increaseExplanation:Let the original price be 100 .After a 35% increase: 100 times 1.35 = 135 Then, a 20% decrease on 135: 135 times 0.80 = 108 Net change = 8% increase. 15. If 45% of a number is equal to 54, what is the number? A) 90B) 100C) 110D) 120 Show Answer Correct Answer: D) 120Explanation:Let the number be x .Then, 0.45x = 54 x = frac{54}{0.45} = 120 16. If a person spends 65% of his income and saves ₹8,750, what is his total income? A) ₹20,000B) ₹22,500C) ₹25,000D) ₹30,000 Show Answer Correct Answer: C) ₹25,000Explanation:If 65% is spent, then 35% is saved. Let the income be x . 0.35x = 8750 x = frac{8750}{0.35} = 25000 17. If

MCQs on Percentages [Set – 2]

MCQs Percentages, MCQs Aptitude

MCQs on Percentages [Set – 2] 1. In an election, two candidates A and B received votes in the ratio 3:2. If A received 60% of the total votes, what percentage of votes did B receive? A) 30%B) 40%C) 50%D) 60% Show Answer Correct Answer: B) 40%Explanation:Since A received 60%, B must have received the remaining percentage: 100% – 60% = 40% 2. The price of an item increased by 25%. By what percentage should its new price be reduced to restore its original price? A) 20%B) 25%C) 30%D) 33.33% Show Answer Correct Answer: A) 20%Explanation:Let the original price be 100 . After a 25% increase, the price becomes 125 . To reduce it back to 100 , calculate the percentage decrease needed: frac{125 – 100}{125} times 100 = 20% 3. A person spends 75% of his salary. If his salary increases by 20%, by what percentage should his expenditure increase so that his savings remain unchanged? A) 15%B) 20%C) 25%D) 10% Show Answer Correct Answer: C) 25%Explanation:If 75% is spent, then 25% is saved. After a 20% salary increase, the expenditure should increase by frac{20% text{ of } 75%}{75%} times 100 = 25% to keep savings the same. 4. If A is 20% less than B, by what percent is B more than A? A) 20%B) 25%C) 30%D) 15% Show Answer Correct Answer: B) 25%Explanation:Let B = 100 . Then A = 80 .The increase from 80 to 100 is frac{100 – 80}{80} times 100 = 25% . 5. The price of a product is reduced by 30%, and as a result, the sales increase by 40%. What is the overall percentage change in the revenue? A) 10% decreaseB) 12% increaseC) 20% increaseD) 2% decrease Show Answer Correct Answer: B) 12% increaseExplanation:Let the original revenue be 100 . After a 30% reduction, price becomes 70 . A 40% increase in sales means the revenue is 70 times 1.40 = 98 , resulting in a 12% increase. 6. A person’s income increases by 10% every year. If his income is ₹50,000 today, what will be his income after 3 years? A) ₹65,000B) ₹66,550C) ₹70,000D) ₹73,205 Show Answer Correct Answer: D) ₹73,205Explanation:Income after 3 years = 50,000 times (1.10)^3 = 73,205 7. A’s salary is 25% more than B’s salary, and B’s salary is 20% less than C’s salary. What is the percentage by which A’s salary is more than C’s salary? A) 5%B) 10%C) 15%D) 20% Show Answer Correct Answer: A) 5%Explanation:Let C = 100 . Then, B = 80 (20% less).A’s salary = 80 times 1.25 = 100 .Thus, A’s salary is 5% more than C’s. 8. A number is increased by 10%, decreased by 15%, and then again increased by 20%. What is the net percentage change? A) 12.1% decreaseB) 12.1% increaseC) 10% increaseD) 15% increase Show Answer Correct Answer: B) 12.1% increaseExplanation:Let the original number be 100 . After increases and decreases, final value = 112.1 , resulting in a net 12.1% increase. 9. In a school, 40% of students are boys. If the number of boys is 240, what is the total number of students in the school? A) 400B) 500C) 600D) 800 Show Answer Correct Answer: B) 500Explanation:Let the total number be x . 0.40x = 240 x = 600 10. If the price of sugar decreases by 20%, how many kilograms of sugar can be bought for ₹600, which was previously used to buy 10 kg? A) 12 kgB) 15 kgC) 18 kgD) 20 kg Show Answer Correct Answer: A) 12 kgExplanation:If the price decreases by 20%, then we can buy more sugar with ₹600. The new price is 80% of the original. Therefore,New quantity = 10 , text{kg} times frac{100}{80} = 12 , text{kg} 11. A’s income is 25% less than B’s income. If B’s income is ₹48,000, what is A’s income? A) ₹36,000B) ₹38,000C) ₹40,000D) ₹42,000 Show Answer Correct Answer: C) ₹36,000Explanation:If A’s income is 25% less than B’s, we calculate A’s income as: 48000 times (1 – frac{25}{100}) = 48000 times 0.75 = 36000 12. A sum of ₹2,000 is divided between A and B in the ratio 3:2. What percentage of the total amount does B receive? A) 20%B) 30%C) 40%D) 50% Show Answer Correct Answer: C) 40%Explanation:Since A and B share ₹2,000 in a 3:2 ratio, B’s share is: frac{2}{5} times 2000 = 800 Percentage of the total for B = frac{800}{2000} times 100 = 40% 13. If a number is first increased by 40% and then decreased by 20%, what is the final percentage change? A) 12% increaseB) 15% increaseC) 10% decreaseD) 20% increase Show Answer Correct Answer: A) 12% increaseExplanation:Let the original number be 100.After a 40% increase: 100 times 1.40 = 140 Then, a 20% decrease on 140: 140 times 0.80 = 112 Final percentage change = 112 – 100 = 12% increase. 14. A company increases its workforce by 15% in the first year and then reduces it by 10% in the second year. What is the net percentage change in the workforce over the two years? A) 2.3% increaseB) 5.5% decreaseC) 4.5% decreaseD) 3.5% increase Show Answer Correct Answer: D) 3.5% increaseExplanation:Let the initial workforce be 100.After a 15% increase: 100 times 1.15 = 115 Then, a 10% decrease on 115: 115 times 0.90 = 103.5 Net change = 3.5% increase. 15. A mixture contains 60% milk and 40% water. If 20 liters of water is added to the mixture, the concentration of water becomes 50%. What was the original quantity of milk in the mixture? A) 20 litersB) 30 litersC) 40 litersD) 50 liters Show Answer Correct Answer: C) 40 litersExplanation:Let the original quantity of milk be x liters.Since milk is 60%, water is 40%, so the original amount of water is 0.4x .With an additional 20 liters, water concentration becomes 50%, hence: x + 20 = 2x 16. If the cost of a television set is increased by 25% and then decreased by 20%, what is the overall percentage change in

MCQs on Simplifications & Approximations [Set – 6]

MCQs Simplifications & Approximations, MCQs Aptitude

MCQs on Simplifications & Approximations [Set – 6] 1. Simplify A) 69B) 70C) 71D) 72 Show Answer Correct Answer: C) 71Explanation:First, calculate the exponents: 8^2 = 64 3^3 = 27 Then, multiply: 5 times 4 = 20 Now, perform the addition and subtraction: 64 – 20 + 27 = 71 2. Approximate A) 2364.22B) 2362.32C) 2363.32D) 2364.32 Show Answer Correct Answer: D) 2364.32Explanation:First, add and subtract in sequence: 1548.76 + 678.34 = 2227.10 2227.10 – 294.67 = 1932.43 1932.43 + 431.89 = 2364.32 3. Simplify A) 61B) 62C) 63D) 64 Show Answer Correct Answer: B) 62Explanation:First, calculate inside the parentheses: 9 + 5 = 14 Then, multiply: 7 times 14 = 98 Then, calculate the exponent: 6^2 = 36 Now, subtract: 98 – 36 = 62 4. Approximate A) 1305.86B) 1305.87C) 1305.88D) 1305.89 Show Answer Correct Answer: C) 1305.88Explanation:First, add and subtract in sequence: 876.43 + 543.21 = 1419.64 1419.64 – 312.54 = 1107.10 1107.10 + 198.78 = 1305.88 5. Simplify A) 109B) 110C) 111D) 112 Show Answer Correct Answer: C) 111Explanation:First, calculate inside the parentheses: 45 + 15 = 60 Then, divide: 60 div 3 = 20 Now, multiply: 20 times 8 = 160 Then, calculate the exponent: 7^2 = 49 Now, subtract: 160 – 49 = 111 6. A) 2722.01B) 2722.11C) 2722.21D) 2722.41 Show Answer Correct Answer: D) 2722.41Explanation:First, add and subtract in sequence: 2154.23 + 789.41 = 2943.64 2943.64 – 534.12 = 2409.52 2409.52 + 312.89 = 2722.41 7. Solve A) 746B) 747C) 748D) 749 Show Answer Correct Answer: C) 748Explanation:First, calculate the exponents: 9^3 = 729 4^2 = 16 Then, multiply: 7 times 5 = 35 Now, perform the subtraction and addition: 729 – 16 + 35 = 748 8. Approximate A) 732.63B) 732.64C) 732.65D) 732.66 Show Answer Correct Answer: C) 732.65Explanation:First, add and subtract in sequence: 431.67 + 367.56 = 799.23 799.23 – 212.45 = 586.78 586.78 + 145.87 = 732.65 9. Solve A) 126B) 127C) 128D) 129 Show Answer Correct Answer: B) 127Explanation:First, calculate inside the parentheses: 4 + 5 = 9 Then, multiply: 6 times 9 = 54 Then, calculate the exponents: 10^2 = 100 9^2 = 81 Now, perform the addition and subtraction: 100 – 54 + 81 = 127 10. Approximate A) 2355.41B) 2356.41C) 2357.31D) 2351.11 Show Answer Correct Answer: B) 2357.41Explanation:First, add and subtract in sequence: 1234.56 + 678.98 = 1913.54 1913.54 – 432.56 = 1480.98 1480.98 + 876.43 = 2357.41 11. Simplify A) -35B) -45C) -55D) -25 Show Answer Correct Answer: A) -35Explanation:First, calculate inside the parentheses: 64 + 36 = 100 Then, divide: 100 div 10 = 10 Now, multiply: 10 times 9 = 90 Then, calculate the exponent: 5^3 = 125 Now, subtract: 90 – 125 = -35 12. Approximate A) 2535.32B) 2535.33C) 2535.34D) 2535.35 Show Answer Correct Answer: C) 2535.34Explanation:First, add and subtract in sequence: 1987.23 + 876.45 = 2863.68 2863.68 – 543.21 = 2320.47 2320.47 + 214.87 = 2535.34 13. A) 427B) 437C) 447D) 457 Show Answer Correct Answer: D) 457Explanation:First, calculate inside the parentheses: 5 + 4 = 9 Then, multiply: 7 times 9 = 63 Then, calculate the exponents: 8^3 = 512 2^3 = 8 Now, perform the subtraction and addition: 512 – 63 + 8 = 457 14. Approximate A) 755.32B) 755.33C) 755.34D) 755.35 Show Answer Correct Answer: C) 755.34Explanation:First, add and subtract in sequence: 543.89 + 312.56 = 856.45 856.45 – 213.45 = 643.00 643.00 + 112.34 = 755.34 15. Simplify A) 156B) 157C) 158D) 159 Show Answer Correct Answer: B) 157Explanation:First, calculate inside the parentheses: 8 + 7 = 15 Then, multiply: 5 times 15 = 75 Then, calculate the exponents: 6^3 = 216 4^2 = 16 Now, perform the addition and subtraction: 216 – 75 + 16 = 157 16. Approximate A) 2218.58B) 2218.68C) 2218.78D) 2218.88 Show Answer Correct Answer: D) 2218.88Explanation:First, add and subtract in sequence: 1567.89 + 864.32 = 2432.21 2432.21 – 452.78 = 1979.43 1979.43 + 239.45 = 2218.88 17. Simplify A) 34B) 35C) 36D) 37 Show Answer Correct Answer: B) 35Explanation:First, calculate inside the parentheses: 5 + 6 = 11 Then, multiply: 9 times 11 = 99 Then, calculate the exponent: 4^3 = 64 Now, subtract: 99 – 64 = 35 18. Approximate A) 1761.76B) 1761.77C) 1761.78D) 1761.79 Show Answer Correct Answer: C) 1761.78Explanation:First, add and subtract in sequence: 1789.56 + 123.45 = 1913.01 1913.01 – 589.12 = 1323.89 1323.89 + 437.89 = 1761.78 19. Simplify A) 157B) 167C) 257D) 267 Show Answer Correct Answer: A) 157Explanation:First, calculate the exponents: 12^2 = 144 3^3 = 27 Then, multiply: 5 times 8 = 40 Now, perform the addition and subtraction: 144 – 27 + 40 = 157 20. Approximate A) 2657.24B) 2657.25C) 2657.26D) 2657.27 Show Answer Correct Answer: B) 2657.25Explanation:First, add and subtract in sequence: 2356.78 + 564.23 = 2921.01 2921.01 – 387.65 = 2533.36 2533.36 + 123.89 = 2657.25 ! Report Error Share this with your friends Solve More MCQs on Simplifications & Approximations Back MCQs Percentages MCQs Numbers MCQs LCM & HCF MCQs Averages MCQs Time, Speed & Distance MCQs Time and Work MCQs Profit and Loss MCQs Simple Interest MCQs Compound Interest MCQs Steam and Boat MCQs Mensuration 2D MCQs Mensuration 3D MCQs Partnership MCQs Height and Distance MCQs Trigonometry MCQs Algebra MCQs Geometry MCQs Logarithms MCQs Probability MCQs Permutation & Combination MCQs Simplifications & Approximations MCQs Data Interpretations MCQs Mixture & Allegations MCQs Cubes and cuboids MCQs Ratio and Proportion MCQs Pipes and Cisterns MCQs on Simplifications & Approximations [Set – 5] Solve MCQs MCQs on Simplifications & Approximations [Set – 4] Solve MCQs MCQs on Simplifications & Approximations [Set – 3] Solve MCQs MCQs on Simplifications & Approximations [Set – 2] Solve MCQs MCQs on Simplifications & Approximations [Set – 1] Solve MCQs Show All

RRB Group D Exam 2024: Detailed Notification

Job Alerts

RRB Group D Exam 2024: Detailed Notification The Railway Recruitment Board (RRB) conducts the Group D examination, a vital national-level assessment that opens doors to various entry-level positions within the Indian Railways. This exam is a significant opportunity for candidates aspiring to work in one of the largest employers in India. This notification provides all the essential details regarding the RRB Group D exam, including eligibility criteria, application process, examination structure, and preparation tips. Important Dates for RRB Group D Exam 2024 Event Date Release of Official Notification October 2024 Start Date for Online Application October 2024 Last Date for Online Application November 2024 Release of Admit Card November 2024 Exam Date December 2024 Result Announcement To be Notified The recruitment process involves several stages, starting with a Computer-Based Test (CBT), followed by a Physical Efficiency Test (PET), Physical Measurement Test (PMT), and finally, Document Verification. Candidates who successfully clear all the stages will proceed to the final selection round. Job Positions Under RRB Group D The following positions are available for candidates who qualify the RRB Group D exam: Helper/Assistant Pointsman Track Maintainer Grade-IV Assistant Pointsman Hospital Assistant Assistant Works Engineering Assistant Track Machine Eligibility Criteria for RRB Group D 1. Age Limit Candidates must be between the ages of 18 and 33 years. However, age relaxations are available for candidates belonging to reserved categories, as outlined in the table below: Category Upper Age Limit Unreserved 33 Years OBC (Non-Creamy Layer) 36 Years SC/ST 38 Years 2. Nationality Candidates applying for the RRB Group D exam must be: Citizens of India Subjects of Bhutan or Nepal Tibetan refugees settled in India before January 1, 1962 Indian nationals from Burma, Pakistan, Sri Lanka, or any country in East Africa with the intention to stay permanently 3. Educational Qualification To be eligible, candidates must have completed one of the following educational qualifications: Passed the 10th standard from a recognized board Completed an ITI course Obtained a National Apprenticeship Certificate (NAC) issued by the NCVT Candidates awaiting their results are not eligible to apply. 4. Medical Standards Candidates must meet certain medical standards to qualify for the RRB Group D exam. These standards include visual acuity and overall physical fitness. Specific medical requirements can be found in the RRB guidelines. Selection Process The selection process for RRB Group D comprises several stages, ensuring a thorough evaluation of candidates. The stages are as follows: Computer-Based Test (CBT): This is the initial stage, where candidates must answer objective-type questions across various subjects. Physical Efficiency Test (PET): Candidates who qualify in the CBT will be called for the PET, which assesses their physical fitness. Document Verification: Successful candidates from the PET will go through document verification to ensure eligibility. Medical Examination: A medical fitness test is conducted to confirm that candidates meet the health standards required for the job. Exam Pattern and Syllabus The RRB Group D examination consists of multiple-choice questions covering a range of subjects. The exam pattern is as follows: Section Number of Questions Marks General Awareness and Current Affairs 20 20 General Science 25 25 Mathematics 25 25 General Intelligence and Reasoning 30 30 Total 100 100 Syllabus Breakdown Mathematics: Topics include Number System, BODMAS, Decimals, Fractions, Averages, LCM & HCF, Ratios, Percentages, Mensuration, Time and Work, Time and Distance, Simple and Compound Interest, Profit & Loss, Algebra, Geometry, and Miscellaneous topics. General Intelligence and Reasoning: Focus on Analogies, Series, Coding and Decoding, Mathematical Operations, Venn Diagrams, Data Interpretation, and more. General Science: Covers Physics, Chemistry, and Biology. General Awareness: Includes Sports, Current Affairs, Geography, History, and Economics. Application Process Candidates can apply for the RRB Group D exam through the official RRB website. The application process involves several steps: Visit the Official Website: Go to the RRB official website. New Registration: Click on the “New Registration” link and fill in the required details. Receive Registration ID: After successful registration, you will receive a Registration ID and password via email and SMS. Application Form: Fill out the application form carefully, ensuring that all information is accurate. Upload Documents: Upload the required documents, including a passport-sized photograph and signature, in the specified formats. Payment of Fees: Pay the application fee through the available payment options. Final Submission: Review all details and submit the application. Don’t forget to take a printout for future reference. Application Fee The application fee for the RRB Group D exam is structured as follows: Category Application Fee (INR) General Category 500 Reserved Categories (SC/ST, PwBD, Women, Transgender, Ex-Servicemen, Economically Backward) 250 Admit Card and Exam Centers Admit cards for the RRB Group D exam will be released on the official RRB website prior to the exam date. Candidates must download and print their admit cards, which will contain vital information such as the exam date, time, and center. Exam Centers: Candidates will select their preferred exam centers while filling out the application form. RRBs will assign centers based on availability, and if a particular center is full, candidates may be allocated to a nearby location. Minimum Qualifying Marks Category Minimum Qualifying Marks (%) General (UR) 40% OBC (Non-Creamy Layer) 30% SC/ST 30% EWS 40% Salary and Benefits The RRB Group D positions offer a competitive salary structure as per the 7th CPC guidelines. The starting salary for Group D posts is approximately ₹18,000 per month, with various allowances and benefits. Preparation Tips for Aspirants Preparing for the RRB Group D exam requires strategic planning and dedication. Here are some valuable tips for effective preparation: Understand the Syllabus: Familiarize yourself with the official syllabus and prioritize high-weightage topics. Practice Regularly: Solve previous years’ question papers and take online mock tests to enhance your problem-solving skills. Stay Informed: Keep up with current affairs and developments related to the railways. Strengthen Fundamentals: Use NCERT textbooks and other standard reference materials to strengthen your basic concepts. Enhance Reasoning Skills: Engage in puzzles and logical reasoning exercises to improve analytical skills. Physical Training: Start physical training early to prepare for the PET,

MCQs on Simplifications & Approximations [Set – 5]

MCQs Simplifications & Approximations, MCQs Aptitude

MCQs on Simplifications & Approximations [Set – 5] 1. Simplify A) 141B) 142C) 143D) 144 Show Answer Correct Answer: C) 143Explanation:First, calculate the exponents: 12^2 = 144 5^2 = 25 Then, multiply: 3 times 8 = 24 Now, perform the addition and subtraction: 144 – 25 + 24 = 143 2. Approximate A) 1038.26B) 1038.27C) 1038.28D) 1038.29 Show Answer Correct Answer: B) 1038.27Explanation:First, add and subtract in sequence: 734.82 + 498.76 = 1233.58 1233.58 – 382.65 = 850.93 850.93 + 187.34 = 1038.27 3. Solve A) 98B) 99C) 100D) 101 Show Answer Correct Answer: B) 99Explanation:First, calculate inside the parentheses: 72 + 48 = 120 Then, divide: 120 div 8 = 15 Now, multiply: 15 times 9 = 135 Then, calculate the exponent: 6^2 = 36 Finally, subtract: 135 – 36 = 99 4. Approximate A) 2277.8B) 2275.8C) 2278.8D) 2276.8 Show Answer Correct Answer: A) 2277.8Explanation:First, add and subtract in sequence: 1342.56 + 642.15 = 1984.71 1984.71 – 498.73 = 1485.98 1485.98 + 791.82 = 2277.8 5. Simplify A) 673B) 674C) 675D) 676 Show Answer Correct Answer: B) 674Explanation:First, calculate inside the parentheses: 6 + 3 = 9 Then, multiply: 7 times 9 = 63 Then, calculate the exponents: 9^3 = 729 2^3 = 8 Now, perform the subtraction and addition: 729 – 63 + 8 = 674 6. Approximate A) 995.99B) 996.98C) 995.89D) 996.89 Show Answer Correct Answer: D) 996.89Explanation:First, add and subtract in sequence: 537.89 + 231.56 = 769.45 769.45 – 127.45 = 642.00 642.00 + 354.89 = 996.89 7. Solve A) 510B) 511C) 512D) 513 Show Answer Correct Answer: C) 512Explanation:First, calculate the exponents: 8^3 = 512 6^2 = 36 Then, multiply: 4 times 9 = 36 Now, perform the subtraction and addition: 512 – 36 + 36 = 512 8. Approximate A) 2219.33B) 2219.34C) 2219.35D) 2219.36 Show Answer Correct Answer: C) 2219.35Explanation:First, add and subtract in sequence: 1649.75 + 742.31 = 2392.06 2392.06 – 562.14 = 1829.92 1829.92 + 389.43 = 2219.35 9. Simplify A) 45B) 65C) 55D) 75 Show Answer Correct Answer: D) 75Explanation:First, calculate inside the parentheses: 7 + 5 = 12 Then, multiply: 13 times 12 = 156 Then, calculate the exponent: 9^2 = 81 Now, subtract: 156 – 81 = 75 10. Approximate A) 1360.46B) 1360.47C) 1360.48D) 1360.49 Show Answer Correct Answer: C) 1360.48Explanation:First, add and subtract in sequence: 754.89 + 324.17 = 1079.06 1079.06 – 178.45 = 900.61 900.61 + 459.87 = 1360.48 11. Solve A) 58B) 68C) 78D) 98 Show Answer Correct Answer: B) 68Explanation:First, calculate inside the parentheses: 36 + 48 = 84 Then, divide: 84 div 12 = 7 Now, multiply: 7 times 11 = 77 Then, calculate the exponent: 3^2 = 9 Finally, subtract: 77 – 9 = 68 12. Approximate A) 2335.09B) 2335.29C) 2335.39D) 2335.59 Show Answer Correct Answer: B) 2335.29Explanation:First, add and subtract in sequence: 1368.45 + 598.76 = 1967.21 1967.21 – 421.34 = 1545.87 1545.87 + 789.42 = 2335.29 13. Simplify A) 141B) 144C) 145D) 155 Show Answer Correct Answer: C) 145Explanation:First, calculate the exponents: 6^2 = 36 5^3 = 125 4^2 = 16 Now, perform the addition and subtraction: 36 + 125 – 16 = 145 14. Approximate A) 1634.84B) 1638.84C) 1644.84D) 1634.74 Show Answer Correct Answer: A) 1634.84Explanation:First, add and subtract in sequence: 921.57 + 428.39 = 1349.96 1349.96 – 276.24 = 1073.72 1073.72 + 561.12 = 1634.84 15. Solve A) 56B) 57C) 58D) 59 Show Answer Correct Answer: B) 57Explanation:First, calculate inside the parentheses: 8 + 4 = 12 Then, multiply: 7 times 12 = 84 Then, calculate the exponent: 3^3 = 27 Now, subtract: 84 – 27 = 57 16. Approximate A) 1992.98B) 1993.88C) 1993.98D) 1994.89 Show Answer Correct Answer: C) 1993.98Explanation:First, add and subtract in sequence: 1489.56 + 743.25 = 2232.81 2232.81 – 563.41 = 1669.40 1669.40 + 324.58 = 1993.98 17. Simplify A) 1366B) 1376C) 1386D) 1396 Show Answer Correct Answer: D) 1396Explanation:First, calculate the exponents: 11^3 = 1331 4^2 = 16 9^2 = 81 Now, perform the addition and subtraction: 1331 – 16 + 81 = 1396 18. Approximate A) 906.76B) 976.67C) 976.76D) 967.67 Show Answer Correct Answer: A) 906.76Explanation:First, add and subtract in sequence: 347.56 + 214.98 = 562.54 562.54 – 109.67 = 452.87 452.87 + 453.89 = 906.76 19. Solve A) 70B) 71C) 72D) 73 Show Answer Correct Answer: B) 71Explanation:First, calculate inside the parentheses: 72 + 28 = 100 Then, divide: 100 div 5 = 20 Now, multiply: 20 times 6 = 120 Then, calculate the exponent: 7^2 = 49 Finally, subtract: 120 – 49 = 71 20. Approximate A) 3610.57B) 3611.57C) 3612.57D) 3615.77 Show Answer Correct Answer: C) 3612.57Explanation:First, add and subtract in sequence: 2765.12 + 934.56 = 3699.68 3699.68 – 678.45 = 3021.23 3021.23 + 591.34 = 3612.57 ! 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