Civil Service Aspirants

41.

Section - Mathematics
Find the mean proportional between 16 and 256.

A.

64

B.

63

C.

66

D.

65

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42.

The marks scored by 10 students are given below.
12, 14, 14, 15, 12, 16, 12, 10, 19, 11
The mode of the given data is:

A.

15

B.

19

C.

14

D.

12

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43.

A cuboid has dimensions 18 m × 12 m × 9 m. What is its total surface area?

A.

998 m²

B.

1062 m²

C.

1128 m²

D.

972 m²

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44.

By how much is 65% of 65 greater than \( \frac{3}{5} \) of 25?

A.

21.25

B.

24.25

C.

27.25

D.

25.25

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45.

The diagonals of a rectangle PQRS meet at O. If ∠QOR = 36°, then find ∠OPS.

A.

144°

B.

72°

C.

108°

D.

54°

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46.

In an election between two candidates, 90% of the registered voters cast their vote and 18% of the votes polled were found invalid. The winning candidate got 51% of the valid votes and won the election by a margin of 1845 votes. How many voters were registered?

A.

124999

B.

124998

C.

124997

D.

125000

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47.

Evaluate: (−9) − (−60) ÷ (−6) + (−4) × 6

A.

−43

B.

−45

C.

−46

D.

−42

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48.

Which of the following numbers divides 71,67,10,501?

A.

16

B.

19

C.

20

D.

13

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49.

The value of \( \frac{5}{2} \) + \(\left(\frac{1}{1+\frac{3}{8}}\right)\) - \( \frac{3}{5} \) is

A.

\( \frac{297}{118} \)

B.

\( \frac{290}{107} \)

C.

\( \frac{289}{110} \)

D.

\( \frac{287}{109} \)

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50.

A vertical post of a height 18 ft is broken at a certain height and its upper part, not completely separated, meets the ground at an angle of 30°. Find the height at which the post is broken.

A.

4 ft

B.

6 ft

C.

7 ft

D.

5 ft

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RRB NTPC 2025-18-08-2025-3 RRB Question Paper

RRB NTPC 2025-18-08-2025-3 RRB Questions