What will come in place of the question mark (?) in the following number series? 2, 5, 10, 17, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 5, 10, 17, ?

A. 28

B. 25

C. 24

D. 26

Answer: Option D

Solution (By JKExamLibrary)

The differences are: 3, 5, 7 (consecutive odd numbers). The next difference should be 9. Therefore, 17+9=26.

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? 2, 10, 30, 68, 130, ?

A. 200

B. 220

C. 222

D. 210

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Correct Answer: Option C

Explanation:
The pattern is: 1³+1=2, 2³+2=10, 3³+3=30, 4³+4=68, 5³+5=130. The next term is 6³+6=222.

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? 12, 18, 26, 36, ?

A. 46

B. 50

C. 48

D. 44

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Correct Answer: Option C

Explanation:
The differences are: 6, 8, 10. These are increasing by 2. The next difference is 12. Therefore, 36+12=48.

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, 12, 21, 32, ?

A. 47

B. 43

C. 45

D. 41

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Correct Answer: Option C

Explanation:
The differences are: 7, 9, 11. These are increasing by 2. The next difference is 13. Therefore, 32+13=45.

This question belongs to: Reasoning Number Series

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