RRB NTPC 2025-18-08-2025-1 RRB Question Paper

RRB NTPC 2025 - Undergraduate Level Question Papers

RRB NTPC 2025-18-08-2025-1 RRB Questions

41.
Section - Mathematics
The LCM of the numbers 6.3 and 0.07 is:
A.
0.063
B.
0.63
C.
63
D.
6.3
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ANSWER :
D. 6.3
42.
Sapna invested ₹20,900 on simple interest, partly at 10% per annum and partly at 9% per annum. If she earns equal interests from the two investments after 8 years, then find the sum invested at 10% per annum (in ₹).
A.
9,897
B.
9,902
C.
9,901
D.
9,900
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ANSWER :
D. 9,900
43.

By how much is 65% of 65 greater than \( \frac{2}{5} \) of 55?

A.

14.25

B.

18.25

C.

17.25

D.

20.25

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ANSWER :

D. 20.25

44.
The number 648679059 is divisible by which of the following?
A.
10
B.
11
C.
3
D.
8
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ANSWER :
C. 3
45.

Find the value of: 57-9 ÷ 57-4 × 57-10

A.

57-33

B.

57-25

C.

57-23

D.

57-18

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ANSWER :

C. 57-23

46.
A balloon's radius increases to 5 times itself when the air is pumped in it. Find the ratio in the surface areas of the balloon after pumping the air to that before pumping the air.
A.
10 : 1
B.
5 : 1
C.
25 : 1
D.
1 : 5
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ANSWER :
C. 25 : 1
47.
If the third proportional of 60 and 30 is x, then what is the value of x?
A.
18
B.
16
C.
15
D.
13
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ANSWER :
C. 15
48.
The average of first 156 even numbers is
A.
158
B.
156.5
C.
157.5
D.
157
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ANSWER :
D. 157
49.
A shopkeeper lists the price of a fan at 25% above its cost price and offers a 16% discount on its list price. If he earns a profit of ₹64, then what is the list price (in ₹) of the fan?
A.
1,354
B.
1,600
C.
1,701
D.
1,419
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ANSWER :
B. 1,600
50.
The sum of the squares of two consecutive even natural numbers is 2452. The sum of the numbers is:
A.
70
B.
54
C.
46
D.
52
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ANSWER :
A. 70