What will come in place of the question mark (?) in the following number series? 2, 10, 30, 68, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 10, 30, 68, ?

A. 140

B. 150

C. 130

D. 120

Answer: Option C

Solution (By JKExamLibrary)

The pattern is: 1³+1=2, 2³+2=10, 3³+3=30, 4³+4=68. The next term is 5³+5=130.

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, 10, 17, ?

A. 24

B. 28

C. 25

D. 26

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Correct Answer: Option D

Explanation:
The differences are: 3, 5, 7 (consecutive odd numbers). The next difference should be 9. Therefore, 17+9=26.

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, 16, 30, 48, 70, ?

A. 94

B. 90

C. 96

D. 92

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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, 70+26=96.

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

A. 62

B. 66

C. 68

D. 64

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Correct Answer: Option B

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

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