What will come in place of the question mark (?) in the following number series? 7, 14, 23, 34, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 7, 14, 23, 34, ?

A. 45

B. 43

C. 49

D. 47

Answer: Option D

Solution (By JKSSB Mock Tests)

The differences are: 7, 9, 11. These are increasing by 2. The next difference is 13. Therefore, 34+13=47.

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, 2, 6, 24, 120, ?

A. 600

B. 720

C. 840

D. 480

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Correct Answer: Option B

Explanation:
The pattern is: 1×1=1, 1×2=2, 2×3=6, 6×4=24, 24×5=120. The next term is 120×6=720.

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? 12, 24, 48, 96, ?

A. 144

B. 192

C. 168

D. 216

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Correct Answer: Option B

Explanation:
Each term is multiplied by 2. Therefore, 96×2=192.

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? 2, 6, 14, 30, 62, ?

A. 122

B. 118

C. 126

D. 120

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Correct Answer: Option C

Explanation:
Each term is obtained by multiplying by 2 and adding 2. (2×2)+2=6, (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

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