Logic Riddles

Question: What number when divided in half becomes zero?

Question: I see you, you see me; I raise my right, you raise your left. What am I?

Question: When the answer I give is yes, it is no, and when the answer I give is no, it is yes. What is the question?

Question: How much does it worth to shoot a free throw in a game of basketball?

Question: One day, a woman was walking through the woods and there were a group of 5 kids and a man with music. At that moment, it was quiet. The man said to the kid that moved, "sit down." All of the other kids were dancing when the music played and they all won. The woman walks away and goes about her business. What just happened?