What will come in place of the question mark (?) in the following number series? 50, 49, 47, 44, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 50, 49, 47, 44, ?

A. 41

B. 40

C. 42

D. 43

Answer: Option B

Solution (By JKExamLibrary)

The differences are: -1, -2, -3. The next difference is -4. Therefore, 44-4=40.

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? 11, 23, 47, 95, ?

A. 189

B. 191

C. 187

D. 185

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Correct Answer: Option B

Explanation:
Each term is obtained by multiplying by 2 and adding 1. (11×2)+1=23, (23×2)+1=47, (47×2)+1=95. The next term is (95×2)+1=191.

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, 15, 45, 135, ?

A. 270

B. 540

C. 405

D. 360

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Correct Answer: Option C

Explanation:
Each term is multiplied by 3. Therefore, 135×3=405.

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? 4, 7, 12, 19, 28, ?

A. 35

B. 41

C. 39

D. 37

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Correct Answer: Option C

Explanation:
The differences are: 3, 5, 7, 9. These are consecutive odd numbers. The next difference is 11. Therefore, 28+11=39.

This question belongs to: Reasoning Number Series

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