Short logic riddles for teens

What body part is pronounced as one letter but written with three, only two different letters are used?

A girl was ten on her last birthday, and will be twelve on her next birthday. How is this possible?

How can a pants pocket be empty and still have something in it?

I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?

There is bomb on top of a computer; around the computer are a hairbrush, keys, phone and a cup. When the explosion comes, what item destroyed first?

Feed me and I live, yet give me a drink and I die.

What is it that has hands, yet is unable to clap?

I am a fruit. Remove my first letter, it's a crime. Remove my first and last letter, it's a kind of music. What do you think am I?

Poke your fingers in my eyes and I will open wide my jaws. Linen cloth, quills, or paper, I will devour them all. What am I?

This is as light as a feather, yet no man can hold it for long. What am I?