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 27, 2009
Six Players, Two Reserves
In a game of six players that lasts for 50 minutes, two reserves substitute for each player so that all players, including reserves, are on the field for the same length of time.