What will come in place of the question mark (?) in the following number series? 2, 5, 12, 27, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 5, 12, 27, ?

A. 54

B. 60

C. 58

D. 56

Answer: Option C

Solution (By JKExamLibrary)

Each term is obtained by multiplying by 2 and adding 1, then 2, then 3? Let's check: (2×2)+1=5, (5×2)+2=12, (12×2)+3=27. The next term is (27×2)+4=58.

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, 13, 21, 31, ?

A. 43

B. 44

C. 42

D. 41

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Correct Answer: Option A

Explanation:
The differences are: 6, 8, 10. These are increasing by 2. The next difference is 12. Therefore, 31+12=43.

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, 8, 15, 24, 35, ?

A. 50

B. 48

C. 52

D. 46

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Correct Answer: Option B

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 #3

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What will come in place of the question mark (?) in the following number series? 4, 6, 10, 16, 24, ?

A. 34

B. 32

C. 36

D. 30

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Correct Answer: Option A

Explanation:
The differences are: 2, 4, 6, 8. These are increasing by 2. The next difference is 10. Therefore, 24+10=34.

This question belongs to: Reasoning Number Series

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