What will come in place of the question mark (?) in the following number series? 2, 10, 30, 68, 130, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 10, 30, 68, 130, ?

A. 200

B. 220

C. 210

D. 222

Answer: Option D

Solution (By JKExamLibrary)

The pattern is: 1³+1=2, 2³+2=10, 3³+3=30, 4³+4=68, 5³+5=130. The next term is 6³+6=222.

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? 8, 16, 24, 32, ?

A. 40

B. 42

C. 36

D. 38

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Correct Answer: Option A

Explanation:
The series increases by 8 each time. Therefore, 32+8=40.

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? 2, 3, 6, 11, 18, ?

A. 29

B. 31

C. 25

D. 27

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Correct Answer: Option D

Explanation:
The differences are: 1, 3, 5, 7. These are consecutive odd numbers. The next difference is 9. Therefore, 18+9=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? 6, 13, 27, 55, ?

A. 112

B. 111

C. 110

D. 109

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Correct Answer: Option B

Explanation:
Each term is obtained by multiplying by 2 and adding 1. (6×2)+1=13, (13×2)+1=27, (27×2)+1=55. The next term is (55×2)+1=111.

This question belongs to: Reasoning Number Series

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