What will come in place of the question mark (?) in the following number series? 13, 26, 52, 104, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 13, 26, 52, 104, ?

A. 234

B. 156

C. 182

D. 208

Answer: Option D

Solution (By JKExamLibrary)

Each term is multiplied by 2. Therefore, 104×2=208.

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? 5, 11, 21, 35, ?

A. 51

B. 47

C. 53

D. 49

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Correct Answer: Option C

Explanation:
The differences are: 6, 10, 14. These are increasing by 4. The next difference is 18. Therefore, 35+18=53.

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, 3, 7, 15, ?

A. 35

B. 31

C. 32

D. 30

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Correct Answer: Option B

Explanation:
Each term is obtained by multiplying the previous term by 2 and adding 1. (1×2)+1=3, (3×2)+1=7, (7×2)+1=15. The next term is (15×2)+1=31.

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? 11, 13, 17, 19, 23, ?

A. 31

B. 25

C. 27

D. 29

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Correct Answer: Option D

Explanation:
The series consists of consecutive prime numbers. The next prime number after 23 is 29.

This question belongs to: Reasoning Number Series

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