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!
Wednesday, September 21, 2005
If only it was Friday
Harry arrives in a town on Friday and stays three days, leaving on Friday. How does he do it?