What will come in place of the question mark (?) in the following number series? 1, 8, 27, 64, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 1, 8, 27, 64, ?

A. 100

B. 125

C. 121

D. 216

Answer: Option B

Solution (By JKSSB Mock Tests)

The series consists of cubes of consecutive integers: 1³, 2³, 3³, 4³. The next term is 5³=125.

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? 8, 15, 24, 35, ?

A. 50

B. 48

C. 52

D. 46

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Correct Answer: Option B

Explanation:
The differences are: 7, 9, 11. These are increasing by 2. The next difference is 13. Therefore, 35+13=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? 2, 3, 6, 11, 18, ?

A. 29

B. 25

C. 31

D. 27

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Correct Answer: Option D

Explanation:
The differences are: 1, 3, 5, 7. These are consecutive odd numbers. The next difference is 9. Therefore, 18+9=27.

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? 3, 5, 8, 12, 17, ?

A. 23

B. 21

C. 24

D. 22

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Correct Answer: Option A

Explanation:
The differences are: 2, 3, 4, 5. The next difference is 6. Therefore, 17+6=23.

This question belongs to: Reasoning Number Series

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