Central Exam — SSC CGL / CHSL / MTS
UPSC · SSC · Bank · Railway · NDA — Central Government Exam MCQ Practice
Showing 11–20 of 170 questions
Q.11
Easy
Quantitative Aptitude
The average of 5 numbers is 24. What is their sum?
Correct Answer:
A. 120
Explanation:
Sum = Average × Number of values = 24 × 5 = 120
Q.12
Easy
Quantitative Aptitude
If the ratio of boys to girls in a class is 3:4 and there are 12 boys, how many girls are there?
Correct Answer:
A. 16
Explanation:
Boys:Girls = 3:4. If boys = 12, then 3 units = 12, so 1 unit = 4. Girls = 4 × 4 = 16
Q.13
Easy
Quantitative Aptitude
What is 25% of 480?
Correct Answer:
A. 120
Explanation:
25% of 480 = (25/100) × 480 = 120
Q.14
Easy
Quantitative Aptitude
A train travels 360 km in 6 hours. What is its speed in km/h?
Correct Answer:
A. 60
Explanation:
Speed = Distance/Time = 360/6 = 60 km/h
Q.15
Easy
Quantitative Aptitude
If 40% of x is 240, what is the value of x?
Correct Answer:
A. 600
Explanation:
40% of x = 240 → (40/100) × x = 240 → x = 600
Q.16
Easy
Quantitative Aptitude
A train travels 240 km in 4 hours. What is its average speed?
Correct Answer:
A. 60 km/h
Explanation:
Average speed = Total distance / Total time = 240/4 = 60 km/h
Q.17
Easy
Quantitative Aptitude
What is the least common multiple (LCM) of 12, 18, and 24?
Correct Answer:
A. 72
Explanation:
Prime factorization: 12=2²×3, 18=2×3², 24=2³×3. LCM = 2³×3² = 8×9 = 72
Q.18
Easy
Quantitative Aptitude
A shopkeeper bought an item for Rs. 400 and sold it for Rs. 520. What is his profit percentage?
Correct Answer:
B. 30%
Explanation:
Profit = 520 - 400 = 120. Profit % = (120/400) × 100 = 30%
Q.19
Easy
Quantitative Aptitude
If x + y = 10 and x - y = 4, what is the value of x?
Correct Answer:
B. 7
Explanation:
Adding both equations: 2x = 14, so x = 7. Alternatively, (x+y) + (x-y) = 10+4 gives 2x = 14
Q.20
Easy
Quantitative Aptitude
What is 25% of 40% of 500?
Correct Answer:
B. 50
Explanation:
40% of 500 = 200. 25% of 200 = 50. Or (0.25 × 0.40 × 500) = 50