Good Riddles

Question: We are 5 little items, and you can find us all in a tennis court.

Question: I never was. Am always to be. No one ever saw me, nor ever will. And yet I am the confidence of all who live and breathe. What am I ?

Question: What do you call a fly without wings?

Question: A man is on a game show. To win the game show and get a car, he must exit an empty room exactly one 1/2 hour later. He is given one candle that lasts exactly one hour and a lighter. Exactly 30 min later the man exits the room and wins his car. How did he do it?

Question: 28th Feb, 2015 Josh went to rob a bank. He threatened to kill the cashier if he didn't open the vault. The cashier told him the vault is not opened with keys but with a password. You can't kill me since I'm the only one who knows the password and everyday the password is different. Josh shot the cashier, entered the password, opened the vault and stole all the money. What is the password?