Are you preparing for the Odisha Staff Selection Commission Combined Graduate Level (OSSC CGL) examination and seeking comprehensive practice material? Mastering arithmetic is crucial as it forms a significant portion of the syllabus. To aid in your preparation, we’ve curated a set of 30 multiple-choice questions covering various arithmetic topics commonly tested in the OSSC CGL exam. Let’s dive into these questions to strengthen your arithmetic skills and boost your confidence for the upcoming examination.
Top 30 Arithmetic MCQs For OSSC CGL
1. What is the average of the first 150 natural numbers?
(A) 70
(B) 70.5
(C) 75
(D) 75.5
Ans: (D) 75.5
SOLUTION: 
2. Calculate 0.003 × 0.02.
(A) 0.06
(B) 0.006
(C) 0.0006
(D) 0.00006
Ans: (D) 0.00006
SOLUTION: 
3. What is the average of the numbers: 0, 0, 4, 10, 5, and 5?
(A) 2
(B) 3
(C) 4
(D) 5
Ans: (C) 4
SOLUTION: 
4. If a car priced at $4,000 was sold for $3,200, what is the rate of discount?
(A) 14%
(B) 16%
(C) 18%
(D) 20%
Ans: (D) 20%
SOLUTION:Â 
5. Evaluate |-3|+|3|-3+3=?
(A) 0
(B) 2
(C) 4
(D) 6
Ans: (D) 6
SOLUTION:Â |-3|+|3|-3+3
= 3+3-3+3=6Â Â Â Â |-a|=a
6. Solve for x in the equation 2x-12-6=0.
(A) 7
(B) 8
(C) 9
(D) 9
Ans: (D) 9
SOLUTION:Â 2x-12-6=0
2x-18=0
2x=18
x= 18/2= 9
07. What is the area, in cm², of the shaded region in the diagram below?
(A) 6
(B) 7
(C) 8
(D) 9
Ans: Â (A) 6
SOLUTION:Â 
08. If A completes a particular task in 8 days and B completes the same task in 24 days, how many days will it take if they work together?
(A) 4
(B) 5
(C) 6
(D) 7
Ans: (C) 6
SOLUTION:Â 
09. What comes next in the sequence: 1, 3, 11, 43, ____ ?
(A) 161
(B) 171
(C) 181
(D) 191
Ans: (B) 171
SOLUTION:Â 
10. What is the distance traveled by a car that traveled at a speed of 80 km/hr for 3 hours and 30 minutes?
(A) 275 km
(B) 280 km
(C) 285 km
(D) 290 km
Ans: B) 280 km
SOLUTION:Â 
11. In a class of 40 students, if 20% are girls, how many boys are there in the class?
(A) 26
(B) 28
(C) 30
(D) 32
Ans: (D) 32
SOLUTION:Â 
12. |2| + |–2| + (2)2 + (–2)2 = ?
(A) 6
(B) 8
(C) 10
(D) 12
Ans: (D) 12
SOLUTION:Â 
13. If x = –1, then what is the value of the function
(A) 7
(B) 9
(C) 11
(D) 13
Ans: (A) 7
SOLUTION:Â 
14. 2 + 2 − 2 × 2 ÷ 2 = ?
(A) 0
(B) 1
(C) 2
(D) 4
Ans: (C) 2
SOLUTION:Â 
15. What comes next in the sequence: 2, 4, 10, 28, ___ ?
(A) 64
(B) 70
(C) 76
(D) 82
Ans: (D) 82
SOLUTION:
2*3-2=4
4*3-2=10
10*3-2=28
28*3-2=82
16. What are the values of x and y in the following pair of equations
(A) x = −2, y = −6
(B) x = 2, y = 6
(C) x = −3, y = −6
(D) x = 3, y = 6
Ans: (D) x = 3, y = 6
SOLUTION:Â 
17. How many feet there are in 5 meters? If 1 meter = 3.281 feet.
(A) 15.505
(B) 15.905
(C) 16.405
(D) 16.805
Ans: (C) 16.405
SOLUTION:Â 3.281*5=16.405
18. 0.003 × 0.0004 = ?
(A) 0.0012
(B) 0.00012
(C) 0.000012
(D) 0.0000012
Ans: (D) 0.0000012
SOLUTION:Â 
19. What is average (Arithmetic Mean) of the numbers: 2, 4, 5, 0, 9, 10, and 12?
(A) 5
(B) 6
(C) 7
(D) 8
Ans: (B) 6
SOLUTION:Â 
20. (2^2)^3\times (2^3)^2=?
(A) 4096
(B) 4046
(C ) 3096
(D) 3046
Ans: (A) 4096
SOLUTION:Â 
21. If A can complete a particular task in 4 days and B can complete the same task in 12 days, how many days will it take them to complete the task together?
(A) 1
(B) 2
(C) 3
(D) 4
Ans: (C) 3
SOLUTION:Â 
22. In a total investment of $500,000, B’s share is 20%, while A’s share is 40% of B’s share. What is A’s share?
(A) $32,000
(B) $34,000
(C) $36,000
(D) $40,000
Ans: (D) $40,000
SOLUTION:Â 
23. If the cost of 12 eggs is $40, what will be the cost of 3 eggs?
(A) $9
(B) $10
(C) $11
(D) $12
Ans: (B) $10
SOLUTION:Â If 12 eggs are of 40, then 1 egg = \frac{40}{12}. So, 3 eggs =
24. If the sum of two numbers is 16, and their product is 63, then what is the larger number?
(A) 9
(B) 10
(C) 11
(D) 12
Ans: (A) 9
SOLUTION:Â 
25. The sum of three consecutive even numbers is 78. What is the largest number?
(A) 22
(B) 24
(C) 26
(D) 28
(E) 30
Ans: (D) 28
SOLUTION:Â 
26. If 40% of a number is 380, what is the number?
(A) 930
(B) 935
(C) 940
(D) 950
Ans: (D) 950
SOLUTION:Â 
27. A boy sold his bicycle for $2400 and earned a 20% profit. What was the original price (the price without the profit) of the bicycle?
(A) $1940
(B) $1960
(C) $1980
(D) $2000
Ans: (D) $2000
SOLUTION:Â 
28. What comes next in the sequence: 1, 1, 2, 6, 24, ____?
(A) 110
(B) 120
(C) 130
(D) 140
Ans: (B) 120
SOLUTION:Â 
29. What is the 81st number in the sequence: 1, 4, 7, 10, ………, a81 = ?
(A) 237
(B) 241
(C) 245
(D) 249
Ans: (B) 241
SOLUTION:Â This is arithmetic sequence with common difference 3. The first number is 1, and we have to find 81st number. Using formula for the nth number in an arithmetic sequence, we have
30. Suppose Rs.1,000 is deposited into a savings account that earns compounded interest at a rate of 5%. How much will be in the account after 2 years if the interest is compounded annually?
(A) Rs.1102.5
(B) Rs.1110.5
(C) Rs.1112.5
(D) Rs.1120.5
Ans: (A) Rs.1102.5
