500
1) What can travel around the world in a corner?
2) What can you catch but not throw?
3)A basket contains 5 apples. Do you know how to divide them among 5 kids so that each one has an apple and one apple stays in the basket?
1) A stamp
2) A cold
3) 4 kids get an apple (one apple for each one of them) and the fifth kid gets an apple with the basket still containing the apple.