Good Riddles

Question: There's a place in the world where the wind blows south then suddenly north.

Where is it?

Question: An empty bus pulls up to a stop and 10 people get on. At the next stop 5 people get off and twice as many people get on as at the first stop. At the third stop 25 get off.

How many people are on the bus at this point?

Question: How can forty elephants have forty-fore heads?

Question: I am the only organ that named myself.What am I?

Question: When do you go at red, but stop at green?