What will come in place of the question mark (?) in the following number series? 1, 5, 13, 29, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 1, 5, 13, 29, ?

A. 61

B. 59

C. 57

D. 63

Answer: Option A

Solution (By JKExamLibrary)

Each term is obtained by multiplying by 2 and adding 3. (1×2)+3=5, (5×2)+3=13, (13×2)+3=29. The next term is (29×2)+3=61.

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? 7, 14, 23, 34, ?

A. 49

B. 43

C. 47

D. 45

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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, 34+13=47.

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? 10, 30, 60, 100, ?

A. 140

B. 150

C. 160

D. 120

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Correct Answer: Option B

Explanation:
The differences are: 20, 30, 40. These are increasing by 10. The next difference is 50. Therefore, 100+50=150.

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? 14, 21, 28, 35, ?

A. 45

B. 42

C. 40

D. 41

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Correct Answer: Option B

Explanation:
The series increases by 7 each time. Therefore, 35+7=42.

This question belongs to: Reasoning Number Series

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