What will come in place of the question mark (?) in the following number series? 2, 11, 28, 53, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 11, 28, 53, ?

A. 82

B. 86

C. 88

D. 84

Answer: Option B

Solution (By JKSSB Mock Tests)

The differences are: 9, 17, 25. These are increasing by 8. The next difference is 33. Therefore, 53+33=86.

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? 2, 5, 10, 17, ?

A. 26

B. 28

C. 24

D. 25

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Correct Answer: Option A

Explanation:
The differences are: 3, 5, 7 (consecutive odd numbers). The next difference should be 9. Therefore, 17+9=26.

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? 11, 15, 19, 23, ?

A. 31

B. 29

C. 25

D. 27

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Correct Answer: Option D

Explanation:
The series increases by 4 each time. Therefore, 23+4=27.

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? 2, 4, 12, 48, ?

A. 240

B. 192

C. 288

D. 144

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Correct Answer: Option A

Explanation:
The pattern is: 2×2=4, 4×3=12, 12×4=48. The multipliers are increasing by 1. The next multiplier is 5. Therefore, 48×5=240.

This question belongs to: Reasoning Number Series

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