What will come in place of the question mark (?) in the following number series? 2, 8, 18, 32, 50, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 8, 18, 32, 50, ?

A. 70

B. 72

C. 68

D. 74

Answer: Option B

Solution (By JKSSB Mock Tests)

The pattern is: 2×1²=2, 2×2²=8, 2×3²=18, 2×4²=32, 2×5²=50. The next term is 2×6²=72.

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? 4, 6, 9, 13, ?

A. 16

B. 18

C. 19

D. 17

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Correct Answer: Option B

Explanation:
The differences are: 2, 3, 4. The next difference is 5. Therefore, 13+5=18.

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? 5, 9, 14, 20, 27, ?

A. 34

B. 35

C. 36

D. 33

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Correct Answer: Option B

Explanation:
The differences are: 4, 5, 6, 7. The next difference is 8. Therefore, 27+8=35.

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, 5, 11, 23, ?

A. 49

B. 45

C. 51

D. 47

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Correct Answer: Option D

Explanation:
Each term is obtained by multiplying by 2 and adding 1. (2×2)+1=5, (5×2)+1=11, (11×2)+1=23. The next term is (23×2)+1=47.

This question belongs to: Reasoning Number Series

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