Question 11
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.” How many of these statements are true?
• An has a blue stone.
• Bình has a blue stone.
• Châu has a red stone.
• An and Châu have stones of different colours.
• An has a blue stone.
• Bình has a blue stone.
• Châu has a red stone.
• An and Châu have stones of different colours.