What will come in place of the question mark (?) in the following number series? 3, 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? 3, 5, 8, 12, 17, ?

A. 23

B. 22

C. 21

D. 24

Answer: Option A

Solution (By JKExamLibrary)

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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Question #1

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What will come in place of the question mark (?) in the following number series? 3, 8, 15, 24, 35, ?

A. 52

B. 50

C. 46

D. 48

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Correct Answer: Option D

Explanation:
The differences are: 5, 7, 9, 11. These are consecutive odd numbers. The next difference is 13. Therefore, 35+13=48.

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? 3, 4, 7, 11, 18, ?

A. 31

B. 29

C. 27

D. 33

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Correct Answer: Option B

Explanation:
This is a Fibonacci-like series where each term is the sum of the previous two terms. 7+11=18, 11+18=29. The next term is 29.

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? 1, 4, 10, 22, ?

A. 44

B. 46

C. 42

D. 48

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Correct Answer: Option B

Explanation:
The pattern is: (1×2)+2=4, (4×2)+2=10, (10×2)+2=22. The next term is (22×2)+2=46.

This question belongs to: Reasoning Number Series

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