Find the odd one out: 3, 7, 11, 15, 19 MCQ with Answer and Explanation

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Find the odd one out: 3, 7, 11, 15, 19

A. 7

B. 11

C. 15

D. 19

Answer: Option C

Solution (By JKSSB Mock Tests)

All others are prime numbers; 15 is composite.

This question belongs to: Reasoning Mental Reasoning

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Question #1

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If South-East becomes North, North-East becomes West and so on, what will West become?

A. North-East

B. North-West

C. South-West

D. South-East

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Correct Answer: Option D

Explanation:
The directions are rotated 135° anti-clockwise. South-East → North (135° ACW). North-East → West. East → North-West. West → South-East.

This question belongs to: Reasoning Mental Reasoning

Question #2

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P is Q's sister. R is Q's mother. S is R's husband. How is P related to S?

A. Mother

B. Wife

C. Daughter

D. Sister

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Correct Answer: Option C

Explanation:
S is Q's father, and P is Q's sister. Hence P is the daughter of S.

This question belongs to: Reasoning Mental Reasoning

Question #3

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A man walks 2 km east, then turns left and walks 3 km, then turns right and walks 2 km, then turns right and walks 3 km. In which direction is he from the starting point?

A. West

B. East

C. North

D. South

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Correct Answer: Option B

Explanation:
He moves east 2 km, north 3 km, east 2 km, then south 3 km. The north-south movements cancel, so he is east of the start.

This question belongs to: Reasoning Mental Reasoning

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