Find the next number in the series: 1, 4, 27, 16, 125, 36, ? MCQ with Answer and Explanation

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Find the next number in the series: 1, 4, 27, 16, 125, 36, ?

A. 64

B. 49

C. 216

D. 343

Answer: Option D

Solution (By JKSSB Mock Tests)

Alternate cubes and squares: 1³, 2², 3³, 4², 5³, 6², 7³=343.

This question belongs to: Reasoning Mental Reasoning

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Question #1

Find the missing term: 9, 16, 25, 36, ?

A. 49

B. 47

C. 81

D. 64

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Correct Answer: Option A

Explanation:
The terms are consecutive squares: 3²=9, 4²=16, 5²=25, 6²=36, so next is 7²=49.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the missing term: 1, 3, 7, 15, 31, ?

A. 64

B. 62

C. 63

D. 65

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Correct Answer: Option C

Explanation:
Each term is double plus 1: 1×2+1=3, 3×2+1=7, 7×2+1=15, 15×2+1=31, so next is 31×2+1=63.

This question belongs to: Reasoning Mental Reasoning

Question #3

Find the odd one out: 2, 5, 10, 17, 26, 37, 50, 64

A. 50

B. 26

C. 37

D. 64

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Correct Answer: Option D

Explanation:
Pattern +3,+5,+7,+9,+11,+13,+15. 50+15=65, but given 64 which is wrong. Hence 64 is odd.

This question belongs to: Reasoning Mental Reasoning

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