What will come in place of the question mark (?) in the following number series? 4, 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? 4, 9, 16, 25, 36, ?

A. 56

B. 42

C. 44

D. 49

Answer: Option D

Solution (By JKExamLibrary)

The series consists of squares of consecutive integers: 2², 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? 10, 20, 40, 80, ?

A. 160

B. 120

C. 180

D. 140

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Correct Answer: Option A

Explanation:
Each term is multiplied by 2. Therefore, 80×2=160.

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? 4, 14, 28, 46, 68, ?

A. 90

B. 88

C. 94

D. 92

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Correct Answer: Option D

Explanation:
The differences are: 10, 14, 18, 22. These are increasing by 4. The next difference is 26. Therefore, 68+26=94.

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. 46

D. 52

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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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