Good Riddles

Question: A man in prison has a visitor. Afterward a guard asks the inmate who the visitor was to him. The inmate replies: "brothers and sisters I have none, but that man's father is my father's son." Who was the visitor to the inmate?

Question: What number do you get when you multiply all of the numbers on a telephone's number pad?

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: I cannot hear or even see,
but sense light and sounds there may be.
Sometimes I end up on the hook,
or even deep into a book.

What am I?

Question: A man is sitting in his cabin in Michigan. 3 hours later he gets out of his cabin in Texas. How is this possible?