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. 74

B. 72

C. 68

D. 70

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? 5, 15, 29, 47, 69, ?

A. 89

B. 91

C. 95

D. 87

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Correct Answer: Option C

Explanation:
The differences are: 10, 14, 18, 22. These are increasing by 4. The next difference is 26. Therefore, 69+26=95.

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, 4, 8, 16, 32, ?

A. 72

B. 64

C. 48

D. 56

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Correct Answer: Option B

Explanation:
Each term is multiplied by 2. Therefore, 32×2=64.

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? 4, 16, 32, 52, 76, ?

A. 96

B. 100

C. 104

D. 98

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Correct Answer: Option C

Explanation:
The differences are: 12, 16, 20, 24. These are increasing by 4. The next difference is 28. Therefore, 76+28=104.

This question belongs to: Reasoning Number Series

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