Find the odd one out: 64, 81, 100, 125, 144 MCQ with Answer and Explanation

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Find the odd one out: 64, 81, 100, 125, 144

A. 125

B. 100

C. 64

D. 144

Answer: Option A

Solution (By JKSSB Mock Tests)

125 is a perfect cube, while all other options are perfect squares.

This question belongs to: Reasoning Mental Reasoning

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Question #1

Find the missing term: 10, 20, 40, 70, 110, ?

A. 170

B. 150

C. 140

D. 160

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Correct Answer: Option D

Explanation:
Differences are +10, +20, +30, +40, so next difference is +50: 110+50=160.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the missing term: 1, 4, 9, 16, 25, ?

A. 49

B. 36

C. 30

D. 35

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Correct Answer: Option B

Explanation:
These are consecutive perfect squares: 1²=1, 2²=4, 3²=9, 4²=16, 5²=25, so next is 6²=36.

This question belongs to: Reasoning Mental Reasoning

Question #3

Statements: Some papers are books. All books are files. Conclusions: I. Some files are papers. II. All papers are files.

A. Neither follows

B. Both follow

C. Only II follows

D. Only I follows

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Correct Answer: Option D

Explanation:
Some papers are books and all books are files ⇒ Some papers are files ⇒ Some files are papers. All papers are files does not follow. Only I.

This question belongs to: Reasoning Mental Reasoning

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