What will come in place of the question mark (?) in the following number series? 3, 4, 7, 11, 18, ? 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, 7, 11, 18, ?

A. 33

B. 31

C. 27

D. 29

Answer: Option D

Solution (By JKSSB Mock Tests)

This is a Fibonacci-like series where each term is the sum of the previous two terms. 7+11=18, 11+18=29. The next term is 29.

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? 50, 49, 47, 44, ?

A. 41

B. 43

C. 40

D. 42

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Correct Answer: Option C

Explanation:
The differences are: -1, -2, -3. The next difference is -4. Therefore, 44-4=40.

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? 5, 9, 14, 20, 27, ?

A. 36

B. 35

C. 34

D. 33

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Correct Answer: Option B

Explanation:
The differences are: 4, 5, 6, 7. The next difference is 8. Therefore, 27+8=35.

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. 65

B. 70

C. 60

D. 75

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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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