What will come in place of the question mark (?) in the following number series? 4, 16, 36, 64, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 4, 16, 36, 64, ?

A. 81

B. 100

C. 121

D. 144

Answer: Option B

Solution (By JKExamLibrary)

The series consists of squares of even numbers: 2², 4², 6², 8². The next term is 10²=100.

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? 6, 16, 30, 48, 70, ?

A. 94

B. 96

C. 92

D. 90

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Correct Answer: Option B

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 #2

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What will come in place of the question mark (?) in the following number series? 2, 4, 12, 48, 240, ?

A. 960

B. 1440

C. 1200

D. 1080

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Correct Answer: Option B

Explanation:
The pattern is: 2×2=4, 4×3=12, 12×4=48, 48×5=240. The multipliers are increasing by 1. The next multiplier is 6. Therefore, 240×6=1440.

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? 5, 10, 17, 26, 37, ?

A. 50

B. 48

C. 52

D. 46

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Correct Answer: Option A

Explanation:
The differences are: 5, 7, 9, 11. These are consecutive odd numbers. The next difference is 13. Therefore, 37+13=50.

This question belongs to: Reasoning Number Series

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