Good Riddles

Question: The more places I be, the less you can see.

What am I?

Question: Why did the chicken cross the road?

Question: If 1/2 of 5 is 3, then what is 1/3 of 10?

Question: A man has 3 children and half of them are girls, how is this possible?

Question: How can you throw a ball 20 meters, and have it come back to you without hitting anything?