Find the odd one out: 41, 43, 47, 53, 61, 71, 73, 81 MCQ with Answer and Explanation

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Find the odd one out: 41, 43, 47, 53, 61, 71, 73, 81

A. 61

B. 81

C. 71

D. 73

Answer: Option B

Solution (By JKSSB Mock Tests)

All others are prime numbers. 81 = 9×9 is not prime.

This question belongs to: Reasoning Logical Reasoning

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Practice More Logical Reasoning Questions

Question #1

Complete the series: 7, 10, 8, 11, 9, 12, ?

A. 13

B. 11

C. 14

D. 10

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Correct Answer: Option D

Explanation:
Two series: 7,8,9,10... and 10,11,12... So next is 10.

This question belongs to: Reasoning Logical Reasoning

Question #2

A is B's brother. C is A's father. D is C's sister. How is D related to B?

A. Maternal aunt

B. Paternal aunt

C. Sister

D. Mother

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Correct Answer: Option B

Explanation:
C is father of both A and B. D is C's sister, so D is B's paternal aunt.

This question belongs to: Reasoning Logical Reasoning

Question #3

Statements: Some tables are chairs. All chairs are desks. Conclusions: I. Some desks are tables. II. Some desks are chairs.

A. Both follow

B. Only I follows

C. Only II follows

D. Neither follows

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Correct Answer: Option A

Explanation:
Some tables chairs + all chairs desks → some tables are desks → some desks are tables. All chairs desks means some desks are chairs.

This question belongs to: Reasoning Logical Reasoning

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