What will come in place of the question mark (?) in the following number series? 12, 18, 26, 36, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 12, 18, 26, 36, ?

A. 44

B. 48

C. 50

D. 46

Answer: Option B

Solution (By JKExamLibrary)

The differences are: 6, 8, 10. These are increasing by 2. The next difference is 12. Therefore, 36+12=48.

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? 9, 25, 49, 81, ?

A. 169

B. 121

C. 100

D. 144

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Correct Answer: Option B

Explanation:
The series consists of squares of odd numbers: 3², 5², 7², 9². The next term is 11²=121.

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, 14, 30, 50, 74, ?

A. 96

B. 102

C. 98

D. 94

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Correct Answer: Option B

Explanation:
The differences are: 12, 16, 20, 24. These are increasing by 4. The next difference is 28. Therefore, 74+28=102.

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? 2, 6, 14, 30, 62, ?

A. 118

B. 122

C. 126

D. 120

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Correct Answer: Option C

Explanation:
Each term is obtained by multiplying by 2 and adding 2. (2×2)+2=6, (6×2)+2=14, (14×2)+2=30, (30×2)+2=62. The next term is (62×2)+2=126.

This question belongs to: Reasoning Number Series

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