What will come in place of the question mark (?) in the following number series? 2, 4, 12, 48, 240, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 4, 12, 48, 240, ?

A. 1200

B. 1080

C. 1440

D. 960

Answer: Option C

Solution (By JKSSB Mock Tests)

The pattern is: 2×2=4, 4×3=12, 12×4=48, 48×5=240. The multipliers are increasing by 1. The next multiplier is 6. Therefore, 240×6=1440.

This question belongs to: Reasoning Number Series

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Question #1

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What will come in place of the question mark (?) in the following number series? 10, 14, 22, 34, ?

A. 52

B. 46

C. 50

D. 48

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Correct Answer: Option C

Explanation:
The differences are: 4, 8, 12. These are increasing by 4. The next difference is 16. Therefore, 34+16=50.

This question belongs to: Reasoning Number Series

Question #2

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What will come in place of the question mark (?) in the following number series? 1, 8, 27, 64, 125, ?

A. 216

B. 196

C. 144

D. 169

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Correct Answer: Option A

Explanation:
The series consists of cubes of consecutive integers: 1³, 2³, 3³, 4³, 5³. The next term is 6³=216.

This question belongs to: Reasoning Number Series

Question #3

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What will come in place of the question mark (?) in the following number series? 2, 10, 30, 68, ?

A. 140

B. 130

C. 150

D. 120

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Correct Answer: Option B

Explanation:
The pattern is: 1³+1=2, 2³+2=10, 3³+3=30, 4³+4=68. The next term is 5³+5=130.

This question belongs to: Reasoning Number Series

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