What will come in place of the question mark (?) in the following number series? 3, 11, 23, 39, 59, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 3, 11, 23, 39, 59, ?

A. 81

B. 83

C. 79

D. 77

Answer: Option B

Solution (By JKExamLibrary)

The differences are: 8, 12, 16, 20. These are increasing by 4. The next difference is 24. Therefore, 59+24=83.

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? 8, 18, 32, 50, ?

A. 74

B. 72

C. 70

D. 68

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Correct Answer: Option B

Explanation:
The pattern is: 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

Question #2

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What will come in place of the question mark (?) in the following number series? 4, 8, 16, 32, ?

A. 56

B. 64

C. 72

D. 48

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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? 6, 14, 30, 62, ?

A. 124

B. 126

C. 122

D. 128

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Correct Answer: Option B

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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