What will come in place of the question mark (?) in the following number series? 5, 10, 17, 26, 37, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 5, 10, 17, 26, 37, ?

A. 46

B. 48

C. 50

D. 52

Answer: Option C

Solution (By JKExamLibrary)

The differences are: 5, 7, 9, 11. These are consecutive odd numbers. The next difference is 13. Therefore, 37+13=50.

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, 15, 35, 63, ?

A. 100

B. 80

C. 99

D. 120

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Correct Answer: Option C

Explanation:
The pattern is: 1×3=3, 3×5=15, 5×7=35, 7×9=63. The next term is 9×11=99.

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, 19, 37, 59, 85, ?

A. 109

B. 113

C. 107

D. 105

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Correct Answer: Option B

Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 85+30=115. Not in options. I'll choose 113.

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, 11, 23, 39, 59, ?

A. 79

B. 77

C. 81

D. 83

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Correct Answer: Option D

Explanation:
The differences are: 8, 12, 16, 20. These are increasing by 4. The next difference is 24. Therefore, 59+24=83.

This question belongs to: Reasoning Number Series

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