What will come in place of the question mark (?) in the following number series? 4, 12, 24, 40, 60, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 4, 12, 24, 40, 60, ?

A. 92

B. 80

C. 84

D. 88

Answer: Option C

Solution (By JKSSB Mock Tests)

The differences are: 8, 12, 16, 20. These are increasing by 4. The next difference is 24. Therefore, 60+24=84.

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? 5, 8, 13, 20, 29, ?

A. 38

B. 42

C. 36

D. 40

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Correct Answer: Option D

Explanation:
The differences are: 3, 5, 7, 9. These are consecutive odd numbers. The next difference is 11. Therefore, 29+11=40.

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? 10, 30, 90, 270, ?

A. 810

B. 720

C. 540

D. 960

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Correct Answer: Option A

Explanation:
Each term is multiplied by 3. Therefore, 270×3=810.

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? 2, 11, 28, 53, ?

A. 82

B. 86

C. 88

D. 84

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Correct Answer: Option B

Explanation:
The differences are: 9, 17, 25. These are increasing by 8. The next difference is 33. Therefore, 53+33=86.

This question belongs to: Reasoning Number Series

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