What will come in place of the question mark (?) in the following number series? 6, 11, 18, 27, 38, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 6, 11, 18, 27, 38, ?

A. 49

B. 53

C. 47

D. 51

Answer: Option D

Solution (By JKExamLibrary)

The differences are: 5, 7, 9, 11. These are consecutive odd numbers. The next difference is 13. Therefore, 38+13=51.

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? 24, 30, 36, 42, ?

A. 54

B. 60

C. 48

D. 50

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Correct Answer: Option C

Explanation:
The series increases by 6 each time. Therefore, 42+6=48.

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? 5, 13, 25, 41, 61, ?

A. 81

B. 83

C. 85

D. 87

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Correct Answer: Option C

Explanation:
The differences are: 8, 12, 16, 20. These are increasing by 4. The next difference is 24. Therefore, 61+24=85.

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, 18, 34, 54, 78, ?

A. 102

B. 100

C. 106

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, 78+28=106.

This question belongs to: Reasoning Number Series

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