A king has no heirs. Wants to pick a successor. Three wise men are invited. King paints a dot on their foreheads and tells them to find out the color which they have been painted with. Color is either red or green, no communication allowed.
He painted all dots green. It look a long while, but finally a man raised a hand and said, "Your majesty, I have a green dot."
How did he know?
He painted all dots green. It look a long while, but finally a man raised a hand and said, "Your majesty, I have a green dot."
How did he know?