What will come in place of the question mark (?) in the following number series? 4, 14, 28, 46, 68, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 4, 14, 28, 46, 68, ?

A. 88

B. 92

C. 94

D. 90

Answer: Option B

Solution (By JKExamLibrary)

The differences are: 10, 14, 18, 22. These are increasing by 4. The next difference is 26. Therefore, 68+26=94.

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, 13, 21, 31, ?

A. 44

B. 43

C. 41

D. 42

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Correct Answer: Option B

Explanation:
The differences are: 6, 8, 10. These are increasing by 2. The next difference is 12. Therefore, 31+12=43.

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? 4, 6, 12, 14, 28, 30, ?

A. 60

B. 62

C. 64

D. 32

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Correct Answer: Option A

Explanation:
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

Question #3

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What will come in place of the question mark (?) in the following number series? 3, 10, 21, 36, 55, ?

A. 80

B. 74

C. 76

D. 78

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Correct Answer: Option D

Explanation:
The differences are: 7, 11, 15, 19. These are increasing by 4. The next difference is 23. Therefore, 55+23=78.

This question belongs to: Reasoning Number Series

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