Why do Chinese men eat more rice than Japanese men do ?

What's the only room from which no one can enter or leave

What has many teeth, but cannot bite?

Who can jump higher than a Mountain?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

A bomb exploded in a room full of married couples and no one died. How?

What is red and smells like blue paint?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

When is the top of a mountain similar to a savings account?

How far can you walk into the woods?