ABSTRACT
The most basic keno wager involves selecting some numbers and waiting to see how many are caught when the casino picks its 20 numbers. Although the variety of games offered at most casinos on the same drawing of 20 numbers makes keno a game that can lead to mathematics far beyond basic counting. The payoff for choosing and catching a single number on a keno ticket is largely standard across casinos, and the mathematics used to evaluate that wager is quite simple. When computing keno probabilities involving tickets with more than one marked number, it is necessary to consider every number drawn by the casino. Everything in a casino comes at a price, and the price of the increased Catch 4 payoff on the Catch All ticket is a zero payoff for catching 2 or 3 numbers.
