RRB NTPC 2025-21-08-2025-1 RRB Question Paper

RRB NTPC 2025 - Undergraduate Level Question Papers

RRB NTPC 2025-21-08-2025-1 RRB Questions

41.
Section - Mathematics
Sapna invested ₹20,300 on simple interest, partly at 11% per annum and partly at 3% per annum. If she earns equal interests from the two investments after 5 years, then find the sum invested at 11% per annum (in ₹).
A.
4,350
B.
4,351
C.
4,347
D.
4,352
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ANSWER :
A. 4,350
42.
The number of prime numbers lying between 430 and 443, both included, is:
A.
4
B.
2
C.
3
D.
5
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ANSWER :
A. 4
43.

By how much is 65% of 65 greater than \( \frac{1}{5} \) of 25?

A.

31.25

B.

37.25

C.

35.25

D.

34.25

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ANSWER :

B. 37.25

44.
Two times the present age of P exceeds the present age of Q by 41 years. After 7 years, nine times Q's age will be 24 years less than six times P's age at that time. What is the present age (in years) of Q?
A.
19
B.
22
C.
20
D.
13
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ANSWER :
D. 13
45.
Evaluate: (-9) - (-60) ÷ (-10) + (-3) × 7
A.
-35
B.
-38
C.
-36
D.
-39
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ANSWER :
C. -36
46.
The LCM of the numbers 14.2 and 0.05 is:
A.
14.2
B.
0.142
C.
142
D.
1.42
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ANSWER :
A. 14.2
47.
Find the mean proportional of 400 and 4.
A.
37
B.
39
C.
40
D.
41
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ANSWER :
C. 40
48.
A shopkeeper lists the price of a fan at 44% above its cost price and offers a 25% discount on its list price. If he earns a profit of ₹126, then what is the list price (in ₹) of the fan?
A.
1,968
B.
2,192
C.
2,098
D.
2,268
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ANSWER :
D. 2,268
49.
ABCD is a trapezium in which BC || AD and AC = CD. If ∠ABC = 36° and ∠BAC = 94°, then what is the measure of ∠ACD (in degree)?
A.
159°
B.
186°
C.
80°
D.
163°
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ANSWER :
C. 80°
50.
A bus travelling at 84 km/hr completes a journey in 20 hours. What should its speed be to cover the same distance in 10 hours?
A.
167 km/hr
B.
165 km/hr
C.
171 km/hr
D.
168 km/hr
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ANSWER :
D. 168 km/hr