What will come in place of the question mark (?) in the following number series? 10, 30, 60, 100, 150, ? 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, 150, ?

A. 210

B. 200

C. 180

D. 220

Answer: Option A

Solution (By JKExamLibrary)

The differences are: 20, 30, 40, 50. These are increasing by 10. The next difference is 60. Therefore, 150+60=210.

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? 5, 10, 15, 20, ?

A. 22

B. 25

C. 30

D. 24

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Correct Answer: Option B

Explanation:
The series is increasing by 5 each time. Therefore, the next term is 20+5=25.[reference:7]

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, 17, 33, 65, ?

A. 129

B. 121

C. 123

D. 125

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Correct Answer: Option A

Explanation:
Each term is obtained by multiplying by 2 and subtracting 1. (9×2)-1=17, (17×2)-1=33, (33×2)-1=65. The next term is (65×2)-1=129.

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? 8, 22, 40, 62, 88, ?

A. 118

B. 110

C. 108

D. 114

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Correct Answer: Option A

Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 88+30=118.

This question belongs to: Reasoning Number Series

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