What will come in place of the question mark (?) in the following number series? 10, 30, 60, 100, ? MCQ with Answer and Explanation

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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. 120

C. 150

D. 160

Answer: Option C

Solution (By JKExamLibrary)

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

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Question #1

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What will come in place of the question mark (?) in the following number series? 3, 9, 19, 33, 51, ?

A. 71

B. 69

C. 67

D. 73

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Correct Answer: Option A

Explanation:
The differences are: 6, 10, 14, 18. These are increasing by 4. The next difference is 22. Therefore, 51+22=73.

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? 12, 14, 18, 24, 32, ?

A. 46

B. 42

C. 44

D. 40

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Correct Answer: Option B

Explanation:
The differences are: 2, 4, 6, 8. These are increasing by 2. The next difference is 10. Therefore, 32+10=42.

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? 4, 6, 12, 14, 28, 30, ?

A. 32

B. 62

C. 64

D. 60

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Correct Answer: Option D

Explanation:
The pattern alternates: +2, ×2, +2, ×2, +2, ×2. The last operation is ×2. Therefore, 30×2=60.[reference:14]

This question belongs to: Reasoning Number Series

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