Logic Riddles

Question: What is green, fuzzy, has four legs and if it fell out of a tree could kill you?

Question: If Washington went to Washington,and Washington washed the clothes how many w's are there in all?

Question: It makes everyone blind. You can't see it and it will always come back for you.

Question: A man was looking at a picture. While staring at the picture he said, brothers and sisters I have none but this man's father is my father's son. Who is in the picture?

Question:

You have a large number of friends coming over and they all get thirsty. Your first friend asks for 1/2 a cup of water. Your second friend asks for 1/4 a cup of water. Your third friend asks for 1/8 a cup of water, etc.

How many cups of water do you need to serve your friends?