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. 60

C. 75

D. 63

Answer: Option C

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? 3, 7, 15, 31, ?

A. 67

B. 65

C. 63

D. 61

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Correct Answer: Option C

Explanation:
Each term is obtained by multiplying by 2 and adding 1. (3×2)+1=7, (7×2)+1=15, (15×2)+1=31. The next term is (31×2)+1=63.

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? 3, 12, 27, 48, 75, ?

A. 108

B. 104

C. 102

D. 100

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Correct Answer: Option A

Explanation:
The pattern is: 3×1²=3, 3×2²=12, 3×3²=27, 3×4²=48, 3×5²=75. The next term is 3×6²=108.

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? 12, 24, 48, 96, ?

A. 144

B. 192

C. 168

D. 216

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Correct Answer: Option B

Explanation:
Each term is multiplied by 2. Therefore, 96×2=192.

This question belongs to: Reasoning Number Series

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