Find the odd one out: 17, 19, 23, 27, 29 MCQ with Answer and Explanation

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Find the odd one out: 17, 19, 23, 27, 29

A. 19

B. 29

C. 27

D. 17

Answer: Option C

Solution (By JKSSB Mock Tests)

All others are prime numbers; 27 is a composite number.

This question belongs to: Reasoning Mental Reasoning

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Question #1

BDFH : EGIK :: JLNP : ?

A. MOPR

B. MOQS

C. LNPR

D. MOQR

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Correct Answer: Option B

Explanation:
Each letter is shifted 3 places forward. J+3=M, L+3=O, N+3=Q, P+3=S, so JLNP becomes MOQS.

This question belongs to: Reasoning Mental Reasoning

Question #2

A, B, C, D, E, F and G are sitting in a row facing North. C is to the immediate right of D. F is fourth to the left of G. B is between A and F. E is between C and G. Who is sitting in the middle?

A. B

B. C

C. E

D. D

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Correct Answer: Option C

Explanation:
From clues: possible arrangement A B F D C E G or similar. Middle is 4th position. One valid is A B F D C E G → D in middle.

This question belongs to: Reasoning Mental Reasoning

Question #3

Find the missing term: 2, 12, 30, 56, ?

A. 90

B. 88

C. 80

D. 84

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Correct Answer: Option A

Explanation:
The terms follow n²+n for odd n? Check: 1²+1=2, 3²+3=12, 5²+5=30, 7²+7=56, so next is 9²+9=90.

This question belongs to: Reasoning Mental Reasoning

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