Central Exam — Railway RRB / NTPC — Mathematics
UPSC · SSC · Bank · Railway · NDA — Central Government Exam MCQ Practice
Showing 1–10 of 19 questions
in Mathematics
Q.1
Easy
Mathematics
What is 15% of 240?
Correct Answer:
A. 36
Explanation:
15% of 240 = (15/100) × 240 = 36
Q.2
Easy
Mathematics
If a train travels 360 km in 6 hours, what is its average speed?
Correct Answer:
B. 60 km/h
Explanation:
Average speed = Distance/Time = 360/6 = 60 km/h
Q.3
Easy
Mathematics
What is the square root of 196?
Correct Answer:
C. 14
Explanation:
√196 = 14 (since 14 × 14 = 196)
Q.4
Easy
Mathematics
Simplify: 8 + 12 ÷ 4 - 2 × 3
Correct Answer:
A. 5
Explanation:
8 + 3 - 6 = 5 (following BODMAS rule)
Q.5
Easy
Mathematics
If 5x + 10 = 35, what is the value of x?
Correct Answer:
B. 5
Explanation:
5x = 35 - 10 = 25, so x = 5
Q.6
Medium
Mathematics
What is the LCM of 12 and 18?
Correct Answer:
B. 36
Explanation:
LCM of 12 and 18 = 36
Q.7
Medium
Mathematics
A shopkeeper sells an item for Rs. 600 and makes a profit of 25%. What was the cost price?
Correct Answer:
B. Rs. 480
Explanation:
If profit is 25%, then SP = CP × 1.25; 600 = CP × 1.25; CP = 480
Q.8
Medium
Mathematics
Two numbers are in the ratio 3:5. If their sum is 80, what are the numbers?
Correct Answer:
B. 30 and 50
Explanation:
3x + 5x = 80; 8x = 80; x = 10. Numbers are 30 and 50
Q.9
Medium
Mathematics
What is the simple interest on Rs. 5000 at 8% per annum for 3 years?
Correct Answer:
B. Rs. 1200
Explanation:
SI = (P × R × T)/100 = (5000 × 8 × 3)/100 = 1200
Q.10
Medium
Mathematics
A train leaves Station A at 8:00 AM and reaches Station B at 2:30 PM. If the distance is 195 km, what is the average speed?
Correct Answer:
B. 30 km/h
Explanation:
Time = 6.5 hours; Speed = 195/6.5 = 30 km/h