Answer:
4 rubber ducks were floating in the bathtub, 2 floated away and 2 drowned. How many ducks are still alive?
How can you place a pencil on the floor so that no one can jump over it?
Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?
A man is able to contact his long lost brother who has never met. They agree to meet. When the brother arrives he is able to instantly pick him out from the crowd. How is that possible?
If there are three apples and you take away two, how many do you have?
Do what he says and you'll be fine, don't and you lose the game.