09/21/2004 - Ping Pong 09/28/2004 - A Circle With Chords 10/05/2004 - Socks in a Drawer 10/12/2004 - Ten Boxes 10/19/2004 - Averages and Squares 10/26/2004 - Chance 11/02/2004 - A Bound on n! 11/09/2004 - Primes and Reciprocals 11/16/2004 - Positive Integers 11/30/2004 - Random Digits