What will come in place of the question mark (?) in the following number series? 3, 4, 6, 9, 13, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 3, 4, 6, 9, 13, ?

A. 20

B. 18

C. 17

D. 19

Answer: Option B

Solution (By JKExamLibrary)

The differences are: 1, 2, 3, 4. The next difference is 5. Therefore, 13+5=18.

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, 24, 42, 64, 90, ?

A. 112

B. 110

C. 116

D. 120

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Correct Answer: Option D

Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 90+30=120.

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? 7, 14, 23, 34, ?

A. 45

B. 47

C. 43

D. 49

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Correct Answer: Option B

Explanation:
The differences are: 7, 9, 11. These are increasing by 2. The next difference is 13. Therefore, 34+13=47.

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, 8, 12, 17, ?

A. 22

B. 24

C. 23

D. 21

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Correct Answer: Option C

Explanation:
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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