What will come in place of the question mark (?) in the following number series? 6, 9, 13, 18, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 6, 9, 13, 18, ?

A. 22

B. 23

C. 25

D. 24

Answer: Option D

Solution (By JKExamLibrary)

The differences are: 3, 4, 5. The next difference is 6. Therefore, 18+6=24.

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, 1, 2, 3, 5, 8, 13, ?

A. 18

B. 24

C. 20

D. 21

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Correct Answer: Option D

Explanation:
This is a Fibonacci series where each term is the sum of the previous two terms. 13+8=21.[reference:9]

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? 9, 10, 12, 15, 19, ?

A. 23

B. 24

C. 25

D. 22

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Correct Answer: Option B

Explanation:
The differences are: 1, 2, 3, 4. The next difference is 5. Therefore, 19+5=24.

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? 20, 25, 35, 50, ?

A. 60

B. 70

C. 75

D. 65

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Correct Answer: Option B

Explanation:
The differences are: 5, 10, 15. These are increasing by 5. The next difference is 20. Therefore, 50+20=70.

This question belongs to: Reasoning Number Series

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