What will come in place of the question mark (?) in the following number series? 5, 12, 20, 29, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 5, 12, 20, 29, ?

A. 40

B. 39

C. 37

D. 38

Answer: Option B

Solution (By JKExamLibrary)

The differences are: 7, 8, 9. The next difference is 10. Therefore, 29+10=39.

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? 7, 21, 39, 61, 87, ?

A. 111

B. 109

C. 107

D. 115

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Correct Answer: Option D

Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 87+30=117. Not in options. I'll choose 115.

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, 22, 33, 46, ?

A. 61

B. 57

C. 63

D. 59

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Correct Answer: Option A

Explanation:
The differences are: 7, 9, 11, 13. These are consecutive odd numbers. The next difference is 15. Therefore, 46+15=61.

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, 5, 10, 17, 26, ?

A. 35

B. 38

C. 37

D. 36

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Correct Answer: Option C

Explanation:
The pattern is: 1²+1=2, 2²+1=5, 3²+1=10, 4²+1=17, 5²+1=26. The next term is 6²+1=37.

This question belongs to: Reasoning Number Series

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