If '+' means '÷', '÷' means '×' and '-' means '-', then 18 + 3 ÷ 2 - 5 = ? MCQ with Answer and Explanation

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If '+' means '÷', '÷' means '×' and '-' means '-', then 18 + 3 ÷ 2 - 5 = ?

A. 6

B. 9

C. 8

D. 7

Answer: Option D

Solution (By JKSSB Mock Tests)

Using the given substitutions: 18 ÷ 3 × 2 - 5 = 6 × 2 - 5 = 12 - 5 = 7.

This question belongs to: Reasoning Mental Reasoning

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Question #1

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Statements: Some books are novels. All novels are magazines. Conclusions: I. Some books are magazines. II. All magazines are novels.

A. Only II follows

B. Both follow

C. Only I follows

D. Neither follows

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Correct Answer: Option C

Explanation:
Some books are novels and all novels are magazines ⇒ Some books are magazines. All magazines are novels does not follow. Only I.

This question belongs to: Reasoning Mental Reasoning

Question #2

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Find the missing term in the series: 2, 6, 12, 20, 30, ?

A. 44

B. 40

C. 42

D. 46

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Correct Answer: Option C

Explanation:
The pattern is n(n+1): 1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30, so the next term is 6×7=42.

This question belongs to: Reasoning Mental Reasoning

Question #3

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Find the odd one out: 121, 144, 169, 196, 225, 256

A. 196

B. 169

C. None of these

D. 121

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Correct Answer: Option C

Explanation:
All are perfect squares: 11²,12²,13²,14²,15²,16². No odd one.

This question belongs to: Reasoning Mental Reasoning

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