RRB NTPC 2021-13-01-2021-1 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-13-01-2021-1 RRB Questions

1.
Name the world famous scientist known for his theory of relativity.
A.
Albert Einstein
B.
Thomas Alva Edison
C.
John Dalton
D.
Christian Bernard
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ANSWER :
A. Albert Einstein
2.

A boy does \( \frac{1}{4} \) th of the work done by a man in the same time. 15 men complete a particular work in 17 days. If 3 men are replaced by 3 boys, the work will be completed in:

A.

18 days

B.

20 days

C.

22 days

D.

24 days

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ANSWER :

B. 20 days

3.
When cost price of x articles is equal to selling price of y articles, the profit is 25%. Then x : y is equal to:
A.
3 : 5
B.
4 : 5
C.
5 : 4
D.
5 : 3
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ANSWER :
C. 5 : 4
4.
When a number is divided by 45, it leaves a remainder of 28. The remainder when the same number is divided by 15 is:
A.
13
B.
10
C.
12
D.
11
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ANSWER :
A. 13
5.
The sum of two angles of a triangle is equal to its third angle. Find the measure of the third angle?
A.
90°
B.
120°
C.
50°
D.
60°
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ANSWER :
A. 90°
6.
A man completes a work in 15 days by working 4 h per day for 5 days, 5 h per day for 5 days and 6 h per day for 5 days. If he works 8 h per day with half an hour lunch break, he will complete the work in:
A.
10 days
B.
7.5 days
C.
12 days
D.
8 days
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ANSWER :
A. 10 days
7.
If J = 17 and N = 13, then JUNIOR = ?
A.
1751318129
B.
1771318129
C.
1761318129
D.
1741318129
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ANSWER :
C. 1761318129
8.

If (a + b\(\sqrt{2}\))² = 19 + 6\(\sqrt{2}\), then a is equal to:

A.

2

B.

3

C.

1

D.

4

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ANSWER :

C. 1

9.

If the speeds of a train in 10 successive hours are a1, a2, a3, a4, a5, a6, a7, a8, a9, and a10, then the average speed of the train is:

A.

harmonic mean of a1, a2, a3, a4, a5, a6, a7, a8, a9, and a10

B.

geometric mean of a1, a2, a3, a4, a5, a6, a7, a8, a9, and a10

C.

arithmetic mean of a1, a2, a3, a4, a5, a6, a7, a8, a9, and a10

D.

median of a1, a2, a3, a4, a5, a6, a7, a8, a9, and a10

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ANSWER :

C. arithmetic mean of a1, a2, a3, a4, a5, a6, a7, a8, a9, and a10

10.
A laptop costs ₹27,000. You have to pay 15% extra to purchase an extended warranty of 2 years. What will be the final cost of the laptop if 6% GST must be paid on the whole?
A.
₹31,293
B.
₹31,050
C.
₹32,913
D.
₹32,670
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ANSWER :
C. ₹32,913