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. 58

B. 54

C. 60

D. 56

Answer: Option A

Solution (By JKSSB Mock Tests)

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? 1, 3, 7, 15, ?

A. 32

B. 35

C. 31

D. 30

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Correct Answer: Option C

Explanation:
Each term is obtained by multiplying the previous term by 2 and adding 1. (1×2)+1=3, (3×2)+1=7, (7×2)+1=15. The next term is (15×2)+1=31.

This question belongs to: Reasoning Number Series