What will come in place of the question mark (?) in the following number series? 1, 4, 9, 16, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 1, 4, 9, 16, ?

A. 36

B. 25

C. 30

D. 20

Answer: Option B

Solution (By JKExamLibrary)

The series consists of squares of consecutive integers: 1², 2², 3², 4². The next term is 5²=25.

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? 3, 8, 15, 24, 35, ?

A. 50

B. 48

C. 46

D. 52

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Correct Answer: Option B

Explanation:
The differences are: 5, 7, 9, 11. These are consecutive odd numbers. 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, 5, 7, ?

A. 8

B. 9

C. 11

D. 10

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Correct Answer: Option C

Explanation:
The given series consists of consecutive prime numbers. The prime numbers in order are 2, 3, 5, 7, 11, 13... Therefore, the next prime number after 7 is 11.[reference:0]

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? 7, 8, 10, 13, 17, ?

A. 21

B. 23

C. 20

D. 22

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Correct Answer: Option D

Explanation:
The differences are: 1, 2, 3, 4. The next difference is 5. Therefore, 17+5=22.

This question belongs to: Reasoning Number Series

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