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, 05 January 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. What is the sum of the first 50 natural numbers?
A) 1225
B) 1275
C) 1325
D) 1375
Answer: B) 1275
2. If a = 5 and b = 3, what is the value of a2+b2/ab ?
A) 34/15
B) 33/15
C) 22/15
D) 31/15
Answer: A) 34/15
3. If the product of two numbers is 48 and their quotient is 3, what are the numbers?
A) 8 and 6
B) 12 and 4
C) 16 and 3
D) 24 and 2
Answer: B) 12 and 4
4. What is the result of 5/8 ÷ 3/4 ?
A) 5/6
B) 5/12
C) 5/24
D) 5/16
Answer: A) 5/6
5. The average of five numbers is 18. If one number is 24, what is the average of the remaining four numbers?
A) 15
B) 16
C) 17
D) 19
Answer: B) 16
6. If the square of a number is 81, what is the number?
A) 9
B) 8
C) 7
D) 6
Answer: A) 9
Note: If the square of a number is 81, the number itself is the square root of 81. The square root of 81 is 9
7. Find the missing number in the series: 2, 5, 10, __, 26, 37.
A) 15
B) 17
C) 20
D) 21
Answer: B) 17
8. If the sum of three consecutive odd numbers is 51, what is the middle number?
A) 15
B) 17
C) 19
D) 21
Answer: B) 17
9. The difference between a number and its square is 36. What is the number?
A) 6
B) 8
C) 9
D) 12
Answer: C) 9
10. If the perimeter of a rectangle is 30 units and its length is 8 units, what is its width?
A) 6
B) 7
C) 8
D) 9
Answer: B) 7
11. Solve for x: 3x+7=22.
A) 5
B) 6
C) 7
D) 8
Answer: A) 5
12. Find the value of 45 ÷ 9 × 3 + 15 – 6=
A) 12
B) 24
C) 25
D) 34
Answer: B) 24
13. What is the product of the first 10 prime numbers?
A) 210
B) 2310
C) 3003
D) 5105
Answer: B) 2310
14. If 3/5 of a number is 36, what is the number?
A) 45
B) 54
C) 60
D) 75
Answer: C) 60
15. If a car travels at a speed of 60 km/h, how far will it travel in 4 hours?
A) 200 km
B) 240 km
C) 250 km
D) 280 km
Answer: B) 240 km
16. If the area of a square is 36 square units, what is the length of one side?
A) 4
B) 6
C) 8
D) 9
Answer: B) 6
17. What is the least common multiple (LCM) of 12 and 18?
A) 18
B) 24
C) 36
D) 72
Answer: C) 36
18. If 2/3 of a number is 24, what is of the same number?
A) 32
B) 36
C) 40
D) 48
Answer: B) 36
19. Find the missing number in the following:
7 – 24 ÷ 8 × m + 6 = 1
A) 4
B) 3
C) 5
D) 6
Answer: A) 4
20. Simplify the numerical expression: [36 ÷ (-9)] ÷ [(-24) ÷ 6]
A) 3
B) 1
C) 4
D) 5
Answer: B) 1
21. A box contains 12 red balls, 8 green balls, and 10 blue balls. What is the probability of drawing a red ball randomly?
A) 1/3
B) 1/2
C) 1/4
D) 1/5
Answer: A) 1/3
22. Find the next term of the arithmetic sequence 177, 173, 169, 165,…
A) 111
B) 161
C) 125
D) 230
Answer: B) 161
23. Simplify: 133 – 19 × 2 + 15
A) 124
B) 110
C) 126
D) 147
Answer: B) 110
24. If a shirt is discounted by 20%, and the discounted price is $40, what was the original price?
A) $45
B) $48
C) $50
D) $52
Answer: C) $50
25. Solve for x: 2x−5=13.
A) 9
B) 10
C) 11
D) 12
Answer: A) 9
26. The perimeter of a rectangle is 24 cm, and its length is 8 cm. What is its width?
A) 4 cm
B) 5 cm
C) 6 cm
D) 7 cm
Answer: A) 4 cm
27. If the sum of two numbers is 50 and their difference is 10, what are the numbers?
A) 20 and 30
B) 25 and 25
C) 35 and 15
D) 40 and 10
Answer: A) 20 and 30
28. If a triangle has sides of lengths 5 cm, 12 cm, and 13 cm, what type of triangle is it?
A) Equilateral
B) Isosceles
C) Scalene
D) Right-angled
Answer: D) Right-angled
29. The sum of three consecutive even integers is 72. What are the integers?
A) 22, 24, 26
B) 18, 20, 22
C) 28, 30, 32
D) 32, 34, 36
Answer: A) 22, 24, 26
30. If the volume of a cube is 125 cubic units, what is the length of one side?
A) 3 units
B) 4 units
C) 5 units
D) 6 units
Answer: C) 5 units
