What will come in place of the question mark (?) in the following number series? 7, 14, 28, 56, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 7, 14, 28, 56, ?

A. 112

B. 84

C. 126

D. 98

Answer: Option A

Solution (By JKSSB Mock Tests)

Each term is multiplied by 2. Therefore, 56×2=112.

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? 4, 9, 16, 25, 36, ?

A. 49

B. 56

C. 44

D. 42

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Correct Answer: Option A

Explanation:
The series consists of squares of consecutive integers: 2², 3², 4², 5², 6². The next term is 7²=49.

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, 11, 27, 59, ?

A. 123

B. 127

C. 125

D. 121

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Correct Answer: Option A

Explanation:
Each term is obtained by multiplying by 2 and adding 5. (3×2)+5=11, (11×2)+5=27, (27×2)+5=59. The next term is (59×2)+5=123.

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, 5, 10, 17, ?

A. 26

B. 24

C. 25

D. 28

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Correct Answer: Option A

Explanation:
The differences are: 3, 5, 7 (consecutive odd numbers). The next difference should be 9. Therefore, 17+9=26.

This question belongs to: Reasoning Number Series

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