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. 25

B. 26

C. 24

D. 28

Answer: Option B

Solution (By JKSSB Mock Tests)

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? 4, 12, 36, 108, ?

A. 540

B. 216

C. 324

D. 432

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Correct Answer: Option C

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? 6, 16, 30, 48, 70, ?

A. 94

B. 92

C. 96

D. 90

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Correct Answer: Option C

Explanation:
The differences are: 10, 14, 18, 22. These are increasing by 4. The next difference is 26. Therefore, 70+26=96.

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, 6, 12, 20, 30, ?

A. 42

B. 46

C. 44

D. 40

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Correct Answer: Option A

Explanation:
The differences are: 4, 6, 8, 10. These are increasing by 2. The next difference is 12. Therefore, 30+12=42.

This question belongs to: Reasoning Number Series

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