Question 21
An, Bình and Châu always lie. Each owns one stone, either blue or red. An says, “My stone is the same colour as Bình’s.” Bình says, “My stone is the same colour as Châu’s.” Châu says, “Exactly two of us have red stones.”
Consider these four claims: An has a blue stone; Bình has a blue stone; Châu has a red stone; An and Châu have stones of different colours. How many of the four claims are true?
Consider these four claims: An has a blue stone; Bình has a blue stone; Châu has a red stone; An and Châu have stones of different colours. How many of the four claims are true?