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. 180

B. 220

C. 210

D. 200

Answer: Option C

Solution (By JKSSB Mock Tests)

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? 13, 26, 52, 104, ?

A. 234

B. 156

C. 208

D. 182

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Correct Answer: Option C

Explanation:
Each term is multiplied by 2. Therefore, 104×2=208.

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? 7, 12, 19, 28, ?

A. 41

B. 39

C. 35

D. 37

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Correct Answer: Option B

Explanation:
The differences are: 5, 7, 9. These are consecutive odd numbers. The next difference is 11. Therefore, 28+11=39.

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, 24, 48, 80, ?

A. 120

B. 100

C. 128

D. 112

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Correct Answer: Option A

Explanation:
The differences are: 16, 24, 32. These are increasing by 8. The next difference is 40. Therefore, 80+40=120.

This question belongs to: Reasoning Number Series

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