RRB NTPC Maths Practice Set – 15

 

RRB NTPC Maths Practice Set – 15

📌 Instructions: नीचे दिए गए प्रत्येक प्रश्न को ध्यानपूर्वक पढ़ें और उत्तर चुनें। ये प्रश्न पूर्व में RRB NTPC परीक्षा में पूछे जा चुके हैं।

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Q1. A man covers a distance of 45 km in 9 hours. He travels partly on foot at 4 km/h and partly by bicycle at 7 km/h. What is the distance travelled on foot?
A. 24 km
B. 27 km
C. 36 km
D. 18 km
✅ Answer: D. 18 km

Q2. The difference between a two-digit number and the number obtained by interchanging the digits is 27. What is the difference between the digits?
A. 3
B. 4
C. 6
D. 9
✅ Answer: A. 3

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Q3. What is the simple interest on ₹1200 for 3 years at 10% per annum?
A. ₹360
B. ₹300
C. ₹400
D. ₹500
✅ Answer: A. ₹360

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Q4. A can do a piece of work in 10 days and B in 15 days. They work together for 5 days. The remaining work will be done by:
A. A alone in 2 days
B. B alone in 3 days
C. A alone in 1 day
D. B alone in 5 days
✅ Answer: C. A alone in 1 day

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Q5. A train 240 m long crosses a pole in 24 seconds. What is the speed of the train?
A. 12 km/h
B. 24 km/h
C. 36 km/h
D. 36 m/s
✅ Answer: C. 36 km/h

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Q6. The least number which when divided by 6, 15 and 18 leaves remainder 5 in each case is:
A. 90
B. 95
C. 85
D. 80
✅ Answer: B. 95

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Q7. A and B together have ₹1210. If 4/15 of A’s amount is equal to 2/5 of B’s amount, how much amount does B have?
A. ₹460
B. ₹484
C. ₹550
D. ₹664
✅ Answer: D. ₹664

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Q8. The ratio between the ages of A and B is 5:4 and after 6 years, it will be 11:10. What is A’s present age?
A. 25 years
B. 30 years
C. 35 years
D. 40 years
✅ Answer: B. 30 years

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Q9. A bag contains 3 red balls, 5 black balls, and 2 white balls. One ball is drawn at random. What is the probability that it is not black?
A. 2/5
B. 3/5
C. 1/2
D. 3/10
✅ Answer: B. 3/5

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Q10. The average of 5 consecutive even numbers is 34. What is the smallest number?
A. 28
B. 30
C. 32
D. 34
✅ Answer: B. 30