January 22, 2019
Problem of the Week
Tuesday, January 22, 2019
Three knights were given 6 coins for their faithful service: 3 gold coins and 3 silver ones. Each one of the knights received 2 coins. The first knight doesn't know what coins the second and the third knight received but he knows which coins he has. What question could you ask the first knight, to which he could reply "yes", "no", or "I don't know", such that his answer would allow you to determine which coins he received?