What will come in place of the question mark (?) in the following number series? 3, 12, 27, 48, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 3, 12, 27, 48, ?

A. 72

B. 63

C. 60

D. 75

Answer: Option D

Solution (By JKSSB Mock Tests)

The pattern is: 3×1²=3, 3×2²=12, 3×3²=27, 3×4²=48. The next term is 3×5²=75.

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, 8, 32, 128, ?

A. 384

B. 256

C. 640

D. 512

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Correct Answer: Option D

Explanation:
Each term is multiplied by 4. Therefore, 128×4=512.

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? 5, 10, 15, 20, ?

A. 24

B. 25

C. 30

D. 22

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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 #3

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What will come in place of the question mark (?) in the following number series? 6, 13, 24, 39, ?

A. 58

B. 56

C. 54

D. 60

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Correct Answer: Option A

Explanation:
The differences are: 7, 11, 15. These are increasing by 4. The next difference is 19. Therefore, 39+19=58.

This question belongs to: Reasoning Number Series

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