I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Sunday, February 12, 2006
What, do you live in a barn?
When it is open it is closed and when it is closed it is open. What is it?