What will come in place of the question mark (?) in the following number series? 4, 6, 12, 14, 28, 30, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 4, 6, 12, 14, 28, 30, ?

A. 60

B. 32

C. 62

D. 64

Answer: Option A

Solution (By JKExamLibrary)

The pattern alternates: +2, ×2, +2, ×2, +2, ×2. The last operation is ×2. Therefore, 30×2=60.[reference:14]

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? 7, 14, 28, 56, ?

A. 84

B. 112

C. 98

D. 126

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Correct Answer: Option B

Explanation:
Each term is multiplied by 2. Therefore, 56×2=112.

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, 9, 17, 33, ?

A. 65

B. 67

C. 69

D. 63

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Correct Answer: Option A

Explanation:
Each term is obtained by multiplying by 2 and subtracting 1. (5×2)-1=9, (9×2)-1=17, (17×2)-1=33. The next term is (33×2)-1=65.

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? 8, 27, 64, 125, ?

A. 196

B. 144

C. 256

D. 216

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Correct Answer: Option D

Explanation:
The series consists of cubes of consecutive integers starting from 2: 2³, 3³, 4³, 5³. The next term is 6³=216.

This question belongs to: Reasoning Number Series

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