What will come in place of the question mark (?) in the following number series? 5, 12, 21, 32, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 5, 12, 21, 32, ?

A. 41

B. 47

C. 45

D. 43

Answer: Option C

Solution (By JKSSB Mock Tests)

The differences are: 7, 9, 11. These are increasing by 2. The next difference is 13. Therefore, 32+13=45.

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, 5, 9, 14, 20, ?

A. 27

B. 26

C. 28

D. 25

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Correct Answer: Option A

Explanation:
The differences are: 3, 4, 5, 6. The next difference is 7. Therefore, 20+7=27.

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? 6, 11, 18, 27, 38, 51, ?

A. 64

B. 68

C. 66

D. 62

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Correct Answer: Option C

Explanation:
The differences are: 5, 7, 9, 11, 13. These are consecutive odd numbers. The next difference is 15. Therefore, 51+15=66.

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? 11, 20, 33, 50, ?

A. 67

B. 69

C. 71

D. 73

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Correct Answer: Option C

Explanation:
The differences are: 9, 13, 17. These are increasing by 4. The next difference is 21. Therefore, 50+21=71.

This question belongs to: Reasoning Number Series

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