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, March 31, 2010
Clocks in a Line
How many times a day do the hour and minute hands on a clock line up exactly with each other?