What will come in place of the question mark (?) in the following number series? 2, 4, 12, 48, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 2, 4, 12, 48, ?

A. 192

B. 240

C. 288

D. 144

Answer: Option B

Solution (By JKSSB Mock Tests)

The pattern is: 2×2=4, 4×3=12, 12×4=48. The multipliers are increasing by 1. The next multiplier is 5. Therefore, 48×5=240.

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? 8, 13, 21, 34, ?

A. 45

B. 49

C. 47

D. 55

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Correct Answer: Option D

Explanation:
This is a Fibonacci-like series where each term is the sum of the previous two terms. 8+13=21, 13+21=34, 21+34=55.

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? 3, 9, 19, 33, 51, ?

A. 67

B. 69

C. 71

D. 73

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Correct Answer: Option C

Explanation:
The differences are: 6, 10, 14, 18. These are increasing by 4. The next difference is 22. Therefore, 51+22=73.

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, 9, 16, 25, ?

A. 30

B. 49

C. 42

D. 36

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Correct Answer: Option D

Explanation:
The series consists of squares of consecutive integers: 2²=4, 3²=9, 4²=16, 5²=25. The next number should be the square of 6, which is 36.[reference:2]

This question belongs to: Reasoning Number Series

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