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. 125

B. 121

C. 216

D. 100

Answer: Option A

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? 1, 2, 6, 24, 120, ?

A. 720

B. 600

C. 480

D. 840

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Correct Answer: Option A

Explanation:
The pattern is: 1×1=1, 1×2=2, 2×3=6, 6×4=24, 24×5=120. The next term is 120×6=720.

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? 1, 4, 9, 16, 25, ?

A. 35

B. 49

C. 36

D. 30

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Correct Answer: Option C

Explanation:
The series consists of squares of consecutive integers: 1², 2², 3², 4², 5². The next term is 6²=36.

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? 8, 22, 40, 62, 88, ?

A. 110

B. 118

C. 114

D. 108

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Correct Answer: Option B

Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 88+30=118.

This question belongs to: Reasoning Number Series

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