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. 38

D. 37

Answer: Option B

Solution (By JKSSB Mock Tests)

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? 2, 12, 26, 44, 66, ?

A. 84

B. 92

C. 88

D. 86

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Correct Answer: Option B

Explanation:
The differences are: 10, 14, 18, 22. These are increasing by 4. The next difference is 26. Therefore, 66+26=92.

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? 20, 25, 35, 50, ?

A. 70

B. 75

C. 60

D. 65

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Correct Answer: Option A

Explanation:
The differences are: 5, 10, 15. These are increasing by 5. The next difference is 20. Therefore, 50+20=70.

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, 5, 8, 12, 17, ?

A. 24

B. 22

C. 21

D. 23

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Correct Answer: Option D

Explanation:
The differences are: 2, 3, 4, 5. The next difference is 6. Therefore, 17+6=23.

This question belongs to: Reasoning Number Series

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