How many words can a pen with half refill write?

How can you tell a raw egg from a hard-boiled egg?

How far can you walk into the woods?

What is the coolest letter in the alphabet?

What kind of band never plays music?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Forwards I am heavy, backward I am not. What am I?

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?

Why Wine Glass Stem is so long?