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!
Friday, March 23, 2007
Name a North American landmark that is constantly moving backwards.
(I'm sure there's more than one, but I heard this on the radio this morning and I thought it was interesting.)