GATE 2022 ES – Question 9

General Aptitude · Analytical Aptitude: Logical Reasoning, Deduction and Analogy · 2 marks · Multiple choice

Exactly one of P, Q, R, S, T copied in an exam. P says “R copied”;Q says “S copied”;R says “P did not copy”;S says “Only one of us is telling the truth”;T says “R is telling the truth.” S never lies. Who copied?

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Correct answer: (B) P

Explanation

S’s true statement means all other four statements are false. R’s statement is false, so P did copy. This also makes T false. P’s accusation of R and Q’s accusation of S are false, consistent with P being the sole copier. **B**.

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