GATE 2017 Agricultural Engineering - Question 64 | Examprev

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Agricultural Engineering > GATE 2017 > Numerical Ability

All people in a certain island are either 'Knights' or 'Knaves' and each person knows every other person's identity. Knights NEVER lie, and knaves ALWAYS lie. P says: 'Both of us are knights.' Q says: 'None of us are knaves.' Which one of the following can be logically inferred from the above?

A

A. Both P and Q are knights

B

B. P is a knight; Q is a knave

C

C. Both P and Q are knaves

D

D. The identities of P, Q cannot be determined

Correct : d

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