The OSSSC RI (Revenue Inspector), ARI (Assistant Revenue Inspector), and Amin Exam 2024 are crucial examinations that require a comprehensive understanding of various Arithmetic topics. To help aspirants prepare effectively, we have compiled a set of 30 competitive-level Arithmetic MCQs covering a wide range of subjects.
Top 30 Arithmetic MCQs for OSSSC RI, ARI, Amin Exam 2024
These 30 General Studies Multiple Choice Questions cover a diverse range of topics relevant to the OSSSC RI, ARI, and Amin Exam 2024. Use these questions as a tool to assess your knowledge and enhance your preparation for the upcoming examination. Remember to review the explanations and expand your understanding of each topic to ensure a well-rounded preparation. Best of luck!
1. Question: What is the sum of the first 50 natural numbers?
- a) 1225
- b) 1275
- c) 1250
- d) 1300
Answer: b) 1275
2. Question: If the product of two numbers is 36 and their ratio is 3:4, what are the numbers?
- a) 6, 8
- b) 9, 12
- c) 4, 9
- d) 2, 18
Answer: a) 6, 8
3. Question: The average of five consecutive odd numbers is 21. What is the third number?
- a) 19
- b) 23
- c) 21
- d) 25
Answer: b) 23
4. Question: A shopkeeper sells a shirt for $40 and incurs a loss of 20%. What is the cost price of the shirt?
- a) $50
- b) $45
- c) $48
- d) $52
Answer: c) $48
5. Question: If 3x + 5 = 14, what is the value of x?
- a) 3
- b) 2
- c) 4
- d) 5
Answer: a) 3
6. Question: The perimeter of a rectangle is 30 cm, and its length is 8 cm. What is the width of the rectangle?
- a) 6 cm
- b) 7 cm
- c) 8 cm
- d) 9 cm
Answer: a) 6 cm
7. Question: If the simple interest on a sum of money for 2 years at 8% per annum is $480, what is the principal amount?
- a) $2,000
- b) $2,400
- c) $3,000
- d) $4,800
Answer: b) $2,400
8. Question: The ratio of the ages of A and B is 3:5. If the sum of their ages is 40 years, what is A’s age?
- a) 15 years
- b) 18 years
- c) 12 years
- d) 20 years
Answer: a) 15 years
9. Question: A train travels 300 km at a speed of 60 km/h. How long does it take to complete the journey?
- a) 3 hours
- b) 4 hours
- c) 5 hours
- d) 6 hours
Answer: c) 5 hours
10. Question: If x – 3 = 7, what is the value of x?
- a) 10
- b) 6
- c) 7
- d) 5
Answer: a) 10
11. Question: The average of three numbers is 15. If two of the numbers are 12 and 18, what is the third number?
- a) 10
- b) 15
- c) 20
- d) 25
Answer: c) 20
12. Question: If the area of a square is 64 square meters, what is the length of one side?
- a) 8 meters
- b) 6 meters
- c) 10 meters
- d) 12 meters
Answer: a) 8 meters
13. Question: If the price of an item is reduced by 20%, by what percentage should it be increased to get back to the original price?
- a) 16%
- b) 18%
- c) 20%
- d) 25%
Answer: b) 18%
14. Question: The population of a city increased from 500,000 to 600,000 in a year. What is the percentage increase?
- a) 10%
- b) 15%
- c) 20%
- d) 25%
Answer: a) 10%
15. Question: If the sum of three consecutive odd numbers is 57, what is the largest number?
- a) 21
- b) 23
- c) 27
- d) 29
Answer: d) 29
16. Question: The average of four numbers is 25. If three of the numbers are 20, 30, and 40, what is the fourth number?
- a) 25
- b) 35
- c) 40
- d) 45
Answer: b) 35
17. Question: If the area of a rectangle is 48 square units and its length is 8 units, what is the width of the rectangle?
- a) 4 units
- b) 6 units
- c) 8 units
- d) 12 units
Answer: a) 4 units
18. Question: A car travels 240 km in 4 hours. What is its average speed?
- a) 50 km/h
- b) 60 km/h
- c) 70 km/h
- d) 80 km/h
Answer: b) 60 km/h
19. Question: If 5x – 3 = 22, what is the value of x?
- a) 5
- b) 4
- c) 3
- d) 2
Answer: a) 5
20. Question: The difference between a number and its three-fifths is 12. What is the number?
- a) 20
- b) 24
- c) 30
- d) 36
Answer: c) 30
21. Question: A square and a rectangle have the same perimeter. If the side of the square is 8 cm, what is the length of the rectangle if its width is 6 cm?
- a) 10 cm
- b) 12 cm
- c) 14 cm
- d) 16 cm
Answer: b) 12 cm
22. Question: If 2/3 of a number is 18, what is the number?
- a) 24
- b) 27
- c) 30
- d) 36
Answer: b) 27
23. Question: The sum of two numbers is 48, and their difference is 12. What are the numbers?
- a) 30, 18
- b) 24, 24
- c) 36, 12
- d) 40, 8
Answer: a) 30, 18
24. Question: A man sells a shirt at a profit of 25%. If the cost price is $40, what is the selling price?
- a) $45
- b) $50
- c) $55
- d) $60
Answer: a) $45
25. Question: If the perimeter of a square is 20 cm, what is the length of one side?
- a) 4 cm
- b) 5 cm
- c) 6 cm
- d) 7 cm
Answer: b) 5 cm
26. Question: A sum of money doubles itself in 5 years at simple interest. What is the rate of interest?
- a) 10%
- b) 12%
- c) 15%
- d) 20%
Answer: b) 12%
27. Question: If 4/5 of a number is 32, what is the number?
- a) 36
- b) 40
- c) 45
- d) 50
Answer: b) 40
28. Question: The length of a rectangle is twice its width, and the area is 48 square units. What is the length of the rectangle?
- a) 6 units
- b) 8 units
- c) 12 units
- d) 16 units
Answer: b) 8 units
29. Question: The difference between the compound interest and simple interest on a sum of money for 2 years at 10% per annum is $20. What is the principal amount?
- a) $800
- b) $1,000
- c) $1,200
- d) $1,500
Answer: a) $800
30. Question: If a number is increased by 25% and then decreased by 20%, what is the net percentage change?
- a) 5%
- b) 2%
- c) 10%
- d) 15%
Answer: a) 5%
