Skip to content / Đến nội dung
ThichHocToan.com

IKMC 2013 - Grades 5-6 - Self-study Question 21

IKMC · IKMC 2013 - Grades 5-6 - Self-study

Question 21

Aron, Bern and Carl always lie. Each of them owns one stone, either a red stone or a green stone. Aron says: “My stone is the same color as Bern’s stone”, Bern says: “My stone is the same color as Carl’s stone”. Carl says: “Exactly two of us own red stones”. Which of the following statements is true?
  1. Aron’s stone is green.
  2. Bern’s stone is green.
  3. Carl’s stone is red.
  4. Aron’s stone and Carl’s stone have different colors.
  5. None of the above is true.