What will come in place of the question mark (?) in the following number series? 1, 2, 4, 7, 11, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 1, 2, 4, 7, 11, ?

A. 14

B. 18

C. 15

D. 16

Answer: Option D

Solution (By JKExamLibrary)

The differences are: 1, 2, 3, 4. The next difference is 5. Therefore, 11+5=16.

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? 48, 24, 12, 6, ?

A. 3

B. 1

C. 4

D. 2

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Correct Answer: Option A

Explanation:
Each term is divided by 2. Therefore, 6/2=3.

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? 6, 13, 27, 55, ?

A. 111

B. 110

C. 112

D. 109

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Correct Answer: Option A

Explanation:
Each term is obtained by multiplying by 2 and adding 1. (6×2)+1=13, (13×2)+1=27, (27×2)+1=55. The next term is (55×2)+1=111.

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? 3, 8, 15, 24, ?

A. 36

B. 40

C. 33

D. 35

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Correct Answer: Option D

Explanation:
The differences are: 5, 7, 9. The next difference is 11. Therefore, 24+11=35.

This question belongs to: Reasoning Number Series

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