RRB NTPC 2025-13-08-2025-3 RRB Question Paper

RRB NTPC 2025-13-08-2025-3 RRB Questions

41.
Section - Mathematics
In △ABC, BD ⟂ AC at D and ∠DBC = 39°. E is a point on BC such that ∠CAE = 16°. What is the measure of ∠AEB?
A.
82°
B.
66°
C.
67°
D.
74°
ANSWER :
C. 67°
42.
One-third of a journey is covered at a speed of 2 km/hr, the next one-third of the journey is covered at a speed of 87 km/hr and the remaining journey is covered at a speed of 53 km/hr. The average speed (in km/hr, rounded off to 1 decimal place) for the entire journey is:
A.
2.7
B.
5.7
C.
8.3
D.
5
ANSWER :
B. 5.7
43.

Find the value of 5-23 × 16-23  × 21-23 .

A.

\(\frac{1}{1725^{23}}\)

B.

\(\frac{1}{1680^{23}}\)

C.

\(\frac{1}{1726^{23}}\)

D.

\(\frac{1}{1634^{23}}\)

ANSWER :

B.\(\frac{1}{1680^{23}}\)

44.
The number 814242541 is divisible by which of the following?
A.
8
B.
12
C.
7
D.
15
ANSWER :
C. 7
45.
I bought two speakers for ₹1,200. I sold the first one at a loss of 8% and the second at a gain of 22%. If, on the whole I made neither a loss nor a gain, find the cost price (in ₹) of the first speaker.
A.
864
B.
900
C.
880
D.
904
ANSWER :
C. 880
46.

Pipe A can fill a tank in 17 hours, pipe B can fill the same tank in 21 hours and pipe C can fill the same tank in 19 hours. The time taken by them to fill the same tank if they operate together is:

A.

13 \( \frac{309}{1079} \) hours

B.

5 \( \frac{309}{1079} \) hours

C.

6 \( \frac{309}{1079} \) hours

D.

11 \( \frac{309}{1079} \) hours

ANSWER :

C. 6 \( \frac{309}{1079} \) hours

47.

By selling an article at \( \frac{4}{14} \) of its actual selling price, Akash incurs a loss of 30%. If he sells it at 54% of its actual selling price, then the profit percentage is:

A.

34.8%

B.

32.6%

C.

33.8%

D.

32.3%

ANSWER :

D. 32.3%

48.
Find the least number of square tiles required to completely cover a floor of dimensions 12.15 m by 11.34 m.
A.
230
B.
150
C.
210
D.
250
ANSWER :
C. 210
49.
Sapna invested ₹22,400 on simple interest, partly at 13% per annum and partly at 3% per annum. If she earns equal interests from the two investments after 7 years, then find the sum invested at 13% per annum (in ₹).
A.
4,198
B.
4,200
C.
4,203
D.
4,197
ANSWER :
B. 4,200
50.
What is the median of the following data?
57, 96, 60, 91, 69, 50, 72, 16, 78, 73, 55
A.
70
B.
69.5
C.
69
D.
68.5
ANSWER :
C. 69