What will come in place of the question mark (?) in the following number series? 9, 16, 25, 36, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 9, 16, 25, 36, ?

A. 64

B. 42

C. 81

D. 49

Answer: Option D

Solution (By JKExamLibrary)

The series consists of squares of consecutive integers starting from 3: 3², 4², 5², 6². The next term is 7²=49.

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? 4, 12, 36, 108, ?

A. 324

B. 540

C. 216

D. 432

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Correct Answer: Option A

Explanation:
Each term is multiplied by 3. Therefore, 108×3=324.

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, 24, 42, 64, 90, ?

A. 116

B. 120

C. 112

D. 110

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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, 90+30=120.

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, 13, 25, 41, 61, ?

A. 87

B. 85

C. 81

D. 83

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Correct Answer: Option B

Explanation:
The differences are: 8, 12, 16, 20. These are increasing by 4. The next difference is 24. Therefore, 61+24=85.

This question belongs to: Reasoning Number Series

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