Easy riddles

Marty and Jill want to copy three 60 minute tapes. They have two tape recorders that will dub the tapes for them, so they can do two at a time. It takes 30 minutes for each side to complete; therefore in one hour two tapes will be done, and in another hour the third will be done. Jill says all three tapes can be made in 90 minutes. How?

There is a word and six letters it contains. Take one away and twelve is what remains. What word is it?

Brothers, all pair up; Bodies firm and tall. You only care to eat the solid food, And don’t care to eat the soup.

A magician was boasting one day at how long he could hold his breath under water. His record was 6 minutes. A kid that was listening said, "that's nothing, I can stay under water for 10 minutes using no types of equipment or air pockets!" The magician told the kid if he could do that, he'd give him $10,000. The kid did it and won the money. How did he do it?

What do you get if you cross a giraffe and a hedgehog?

What do ghosts wear on their feet?

All about, but cannot be seen. Can be captured, but cannot be held. No throat, but can be heard. What is it?

A sign on the barber's door says "I shave only those who do not shave themselves." Does the barber shave himself?

A man eats dinner, goes up to his bedroom, turns off the lights, and goes to sleep. In the morning, he wakes up and looks outside. Horrified at what he sees, he hurls himself out his window to his death. Why does he do this?

I know a number which when multiplied by multiple of 9 i.e 9 18 27 36 45 ... The output consist of number containing only one digit. Can you identify the number?