Fun Riddles

Question: You can easily touch me, but not see me.
You can throw me out, but not away.

What am I?

Question: What jumps when it walks and sits when it stands?

Question: A blue man lives in a blue house. A green man lives in a green house. Who lives in the white house?

Question: If 1+9+8=1, what is 2+8+9?

Question: What starts with "P" and ends with "E" and has more than 1000 letters?