What will come in place of the question mark (?) in the following number series? 1, 2, 5, 14, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 1, 2, 5, 14, ?

A. 42

B. 43

C. 44

D. 41

Answer: Option D

Solution (By JKSSB Mock Tests)

Each term is obtained by multiplying by 3 and subtracting 1. (1×3)-1=2, (2×3)-1=5, (5×3)-1=14. The next term is (14×3)-1=41.

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, 11, 27, 59, ?

A. 123

B. 127

C. 125

D. 121

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Correct Answer: Option A

Explanation:
Each term is obtained by multiplying by 2 and adding 5. (3×2)+5=11, (11×2)+5=27, (27×2)+5=59. The next term is (59×2)+5=123.

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, 6, 14, 30, ?

A. 62

B. 56

C. 58

D. 46

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Correct Answer: Option A

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

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? 41, 43, 47, 53, 59, ?

A. 65

B. 64

C. 61

D. 67

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Correct Answer: Option C

Explanation:
The series consists of consecutive prime numbers. The prime number immediately following 59 is 61.[reference:4]

This question belongs to: Reasoning Number Series

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