What will come in place of the question mark (?) in the following number series? 5, 8, 12, 17, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 5, 8, 12, 17, ?

A. 24

B. 22

C. 23

D. 21

Answer: Option C

Solution (By JKExamLibrary)

The differences are: 3, 4, 5. The next difference is 6. Therefore, 17+6=23.

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, 4, 9, 16, ?

A. 25

B. 36

C. 20

D. 30

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Correct Answer: Option A

Explanation:
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

Question #2

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What will come in place of the question mark (?) in the following number series? 16, 8, 4, 2, ?

A. 2

B. 0.5

C. 1.5

D. 1

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Correct Answer: Option D

Explanation:
Each term is divided by 2. Therefore, 2/2=1.

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? 2, 8, 32, 128, ?

A. 640

B. 512

C. 384

D. 256

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Correct Answer: Option B

Explanation:
Each term is multiplied by 4. Therefore, 128×4=512.

This question belongs to: Reasoning Number Series

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