What will come in place of the question mark (?) in the following number series? 2, 4, 12, 48, 240, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 4, 12, 48, 240, ?

A. 1200

B. 1080

C. 1440

D. 960

Answer: Option C

Solution (By JKExamLibrary)

The pattern is: 2×2=4, 4×3=12, 12×4=48, 48×5=240. The multipliers are increasing by 1. The next multiplier is 6. Therefore, 240×6=1440.

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? 10, 30, 60, 100, ?

A. 160

B. 120

C. 150

D. 140

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Correct Answer: Option C

Explanation:
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

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. 121

B. 125

C. 123

D. 129

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Correct Answer: Option D

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? 11, 14, 19, 26, ?

A. 31

B. 35

C. 37

D. 33

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Correct Answer: Option B

Explanation:
The differences are: 3, 5, 7. These are consecutive odd numbers. The next difference is 9. Therefore, 26+9=35.

This question belongs to: Reasoning Number Series

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