Good Riddles

 
easy riddle (medium)

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?

Zero (medium)

Question: What number when divided in half becomes zero?

Riddle #3285 (medium)

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

Question: If there's a pound of lead and feather, which is heavier?