What will come in place of the question mark (?) in the following number series? 11, 20, 33, 50, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 11, 20, 33, 50, ?

A. 69

B. 71

C. 67

D. 73

Answer: Option B

Solution (By JKExamLibrary)

The differences are: 9, 13, 17. These are increasing by 4. The next difference is 21. Therefore, 50+21=71.

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, 12, 27, 48, 75, ?

A. 100

B. 108

C. 104

D. 102

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Correct Answer: Option B

Explanation:
The pattern is: 3×1²=3, 3×2²=12, 3×3²=27, 3×4²=48, 3×5²=75. The next term is 3×6²=108.

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, 14, 20, 27, ?

A. 33

B. 35

C. 36

D. 34

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Correct Answer: Option B

Explanation:
The differences are: 4, 5, 6, 7. The next difference is 8. Therefore, 27+8=35.

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, 13, 22, 33, 46, ?

A. 59

B. 57

C. 61

D. 63

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Correct Answer: Option C

Explanation:
The differences are: 7, 9, 11, 13. These are consecutive odd numbers. The next difference is 15. Therefore, 46+15=61.

This question belongs to: Reasoning Number Series

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