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. 92

B. 90

C. 94

D. 88

Answer: Option A

Solution (By JKSSB Mock Tests)

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? 1, 1, 2, 3, 5, 8, 13, ?

A. 24

B. 21

C. 20

D. 18

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Correct Answer: Option B

Explanation:
This is a Fibonacci series where each term is the sum of the previous two terms. 13+8=21.[reference:9]

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, 12, 48, 192, ?

A. 768

B. 960

C. 576

D. 384

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Correct Answer: Option A

Explanation:
Each term is multiplied by 4. Therefore, 192×4=768.

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? 2, 12, 36, 80, ?

A. 180

B. 170

C. 160

D. 150

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Correct Answer: Option D

Explanation:
The pattern is: 1×2=2, 2×6=12, 3×12=36, 4×20=80. The multipliers are 2,6,12,20 which are n(n+1) for n=1,2,3,4. For n=5, 5×30=150.

This question belongs to: Reasoning Number Series

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