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. 68

C. 74

D. 72

Answer: Option D

Solution (By JKExamLibrary)

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? 2, 6, 14, 30, ?

A. 58

B. 62

C. 46

D. 56

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Correct Answer: Option B

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 #2

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What will come in place of the question mark (?) in the following number series? 8, 10, 14, 20, ?

A. 32

B. 30

C. 28

D. 26

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Correct Answer: Option C

Explanation:
The differences are: 2, 4, 6. These are increasing by 2. The next difference is 8. Therefore, 20+8=28.

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? 6, 14, 30, 62, ?

A. 126

B. 128

C. 122

D. 124

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Correct Answer: Option A

Explanation:
Each term is obtained by multiplying by 2 and adding 2. (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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