Good Riddles

Question: rita's father's name is raghu. raghu is the ________ of rita's father.

Question: what goes down but never goes up?

Question: I look green but I am not. I look blue but I am not. I look red but I am not. What am I?

Question: What number when divided in half becomes zero?

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