Logic Riddles

Question: Which state can you leave or enter without changing your address?

Question: What is the only question you can never answer?

Question: While the barracuda uses opportunity and speed to prey on other large fish, it has little interest in humans. Barracuda attacks on humans are rare; but when they do, what is the reason?

Question: What has hands, but can not clap?

Question: If a man has 10 birds and he sells them for 80 chicks each, how many chicks does he have?