What is the length of the Indian railway network as of 2024?

The correct answer is C: 80,000 km. The Indian railway network spans approximately 80,000 km as of 2024.

What is the target for Railway Electrification by 2025 according to official plans?

The correct answer is C: 90% of routes. Indian Railways aims to electrify 90% of its routes by 2025.

In 2024, how many Vande Bharat trains were operational or approved on various routes across India?

The correct answer is C: 60. By 2024, approximately 60 Vande Bharat trains were operational or approved across different Indian Railway routes.

Which of the following is an example of a chemical change?

The correct answer is B: Rusting of iron. Rusting of iron is a chemical change as a new substance (iron oxide) is formed. Others are physical changes.

Which Indian Railway zone has the highest number of stations as of 2024?

The correct answer is A: Central Railway. Central Railway zone operates over 1,300 stations, the maximum among all zones.

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Railway RRB / NTPC
Mathematics

NTPC, Group D, JE — all sections

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Difficulty: All Easy Medium Hard 1–5 of 5

Topics in Railway RRB / NTPC

All General Science 100 Mathematics 18 Current Affairs (Railway) 100 Indian Railway GK 100 Technical Knowledge (NTPC) 100

Q.1 Easy Mathematics

If 5x + 10 = 35, what is the value of x?

A 3

B 5

C 7

D 9

Correct Answer: B. 5

EXPLANATION

5x = 35 - 10 = 25, so x = 5

Test

Q.2 Easy Mathematics

Simplify: 8 + 12 ÷ 4 - 2 × 3

A 5

B 8

C 11

D 14

Correct Answer: A. 5

EXPLANATION

8 + 3 - 6 = 5 (following BODMAS rule)

Test

Q.3 Easy Mathematics

What is the square root of 196?

A 12

B 13

C 14

D 15

Correct Answer: C. 14

EXPLANATION

√196 = 14 (since 14 × 14 = 196)

Test

Q.4 Easy Mathematics

If a train travels 360 km in 6 hours, what is its average speed?

A 50 km/h

B 60 km/h

C 70 km/h

D 80 km/h

Correct Answer: B. 60 km/h

EXPLANATION

Average speed = Distance/Time = 360/6 = 60 km/h

Test

Q.5 Easy Mathematics

What is 15% of 240?

A 36

B 40

C 45

D 48

Correct Answer: A. 36

EXPLANATION

15% of 240 = (15/100) × 240 = 36

Test

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Railway RRB / NTPC Mathematics

Railway RRB / NTPC
Mathematics