I hung out for a while in one of the local casinos a few days ago to see whether any of the number theory stuff applied in that sort of environment.  I spent a couple of  hours on Roulette, then about the same length of time on Keno.

Nothing conclusive, but if you have a casino nearby you might find it amusing to test it out there.  Sort of one of those rewarding experiences a person can occasionally get hanging around a casino.

Jack