Good Riddles

Question: What room can no one enter?

Question: There are 5 frogs, 1 die. How many left?

Question: A wooden block is floated on water. What can be placed on it to reduce its weight?

Question: What is heavy one way and not the other?

Question: What type of chair is electric, you can't get out of it on your own, but if someone helps you get out you're not dead?