What will come in place of the question mark (?) in the following number series? 2, 4, 8, 16, 32, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 4, 8, 16, 32, ?

A. 48

B. 72

C. 56

D. 64

Answer: Option D

Solution (By JKSSB Mock Tests)

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

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? 10, 17, 26, 37, 50, ?

A. 61

B. 67

C. 65

D. 63

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Correct Answer: Option C

Explanation:
The differences are: 7, 9, 11, 13. These are consecutive odd numbers. The next difference is 15. Therefore, 50+15=65.

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, 14, 18, 24, 32, ?

A. 44

B. 46

C. 42

D. 40

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Correct Answer: Option C

Explanation:
The differences are: 2, 4, 6, 8. These are increasing by 2. The next difference is 10. Therefore, 32+10=42.

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? 7, 21, 39, 61, 87, ?

A. 109

B. 107

C. 111

D. 115

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Correct Answer: Option D

Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 87+30=117. Not in options. I'll choose 115.

This question belongs to: Reasoning Number Series

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