What will come in place of the question mark (?) in the following number series? 2, 6, 18, 54, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 6, 18, 54, ?

A. 108

B. 162

C. 216

D. 324

Answer: Option B

Solution (By JKSSB Mock Tests)

Each term is multiplied by 3 to get the next term. Therefore, 54×3=162.[reference:10]

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? 1, 6, 15, 28, ?

A. 45

B. 48

C. 42

D. 40

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Correct Answer: Option A

Explanation:
The pattern is: 1×1=1, 2×3=6, 3×5=15, 4×7=28. The next term is 5×9=45.

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? 6, 18, 34, 54, 78, ?

A. 100

B. 102

C. 106

D. 98

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Correct Answer: Option C

Explanation:
The differences are: 12, 16, 20, 24. These are increasing by 4. The next difference is 28. Therefore, 78+28=106.

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, 11, 18, 27, 38, 51, ?

A. 64

B. 62

C. 68

D. 66

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Correct Answer: Option D

Explanation:
The differences are: 5, 7, 9, 11, 13. These are consecutive odd numbers. The next difference is 15. Therefore, 51+15=66.

This question belongs to: Reasoning Number Series

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