What will come in place of the question mark (?) in the following number series? 5, 8, 12, 17, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 5, 8, 12, 17, ?

A. 24

B. 21

C. 22

D. 23

Answer: Option D

Solution (By JKSSB Mock Tests)

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

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? 6, 14, 30, 62, ?

A. 122

B. 126

C. 128

D. 124

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Correct Answer: Option B

Explanation:
Each term is obtained by multiplying by 2 and adding 2. (6×2)+2=14, (14×2)+2=30, (30×2)+2=62. The next term is (62×2)+2=126.

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? 2, 3, 6, 11, 18, ?

A. 31

B. 25

C. 29

D. 27

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Correct Answer: Option D

Explanation:
The differences are: 1, 3, 5, 7. These are consecutive odd numbers. The next difference is 9. Therefore, 18+9=27.

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? 4, 6, 9, 13, ?

A. 18

B. 19

C. 17

D. 16

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Correct Answer: Option A

Explanation:
The differences are: 2, 3, 4. The next difference is 5. Therefore, 13+5=18.

This question belongs to: Reasoning Number Series

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