Here we go!
The King is about to die. He sends messengers throughout the land seeking for the 3 smartest people. Finally 3 are found. He gives them a task to see which one is the wisest. He tells them, "I will seat you in a triangle so that each of you faces the other two. Then I will blindfold you and paint either a red or a green dot on each of your foreheads. When I remove the blindfolds each of you must raise your hand if you see any green dots. As soon as you have figured out what color your own dot is, lower your hand and tell me." So he seats them, blindfolds them, and then paints a green dot on all three foreheads. When the blindfolds are removed, all three hands go up. After a long pause, one hand comes down and the man says, "Your highness, I have a green dot." How did he know?
The King is about to die. He sends messengers throughout the land seeking for the 3 smartest people. Finally 3 are found. He gives them a task to see which one is the wisest. He tells them, "I will seat you in a triangle so that each of you faces the other two. Then I will blindfold you and paint either a red or a green dot on each of your foreheads. When I remove the blindfolds each of you must raise your hand if you see any green dots. As soon as you have figured out what color your own dot is, lower your hand and tell me." So he seats them, blindfolds them, and then paints a green dot on all three foreheads. When the blindfolds are removed, all three hands go up. After a long pause, one hand comes down and the man says, "Your highness, I have a green dot." How did he know?