Keno involves the player choosing from 1 to
15 (sometimes 20) numbers from 1 to 80. Every five minutes (online casino are
faster) or so the casino will
choose 20 numbers ranging from 1 to 80. If enough of your chosen numbers match
those drawn by the casino then you will win, depending on exactly how many match
and the payoff table at your particular casino.
While the payoff tables will vary from one casino to another the expected
return seems to always range from 70 to 80 cents per dollar bet, making keno
among the worst bets in the casino. Many states outside Nevada offer keno as an
alternative to lottery tickets. While I can't speak for every state Maryland
keno has an expected return of about 50 cents per dollar bet. I believe other
state run keno to be just as bad.
Minimum bets can be as low as 5
cents, although some casinos only accept bets of $1 or more. The house's Keno
brochures give you information about payoffs and various tickets you can play.
A Typical Keno Game