What will come in place of the question mark (?) in the following number series? 8, 15, 24, 35, 48, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 8, 15, 24, 35, 48, ?

A. 65

B. 61

C. 59

D. 63

Answer: Option D

Solution (By JKExamLibrary)

The differences are: 7, 9, 11, 13. These are consecutive odd numbers. The next difference is 15. Therefore, 48+15=63.

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, 10, 20, 40, ?

A. 90

B. 70

C. 60

D. 80

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Correct Answer: Option D

Explanation:
Each term is multiplied by 2. Therefore, 40×2=80.

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? 9, 14, 20, 27, ?

A. 35

B. 39

C. 33

D. 37

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Correct Answer: Option A

Explanation:
The differences are: 5, 6, 7. The next difference is 8. Therefore, 27+8=35.

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? 6, 13, 27, 55, ?

A. 112

B. 111

C. 109

D. 110

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Correct Answer: Option B

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

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