Math is everywhere in gambling. But probability of winning/losing exists for every single game or outcome in the casino. It can shift wildly from game to game, round to round, and in either direction (win/lose/tie) at any given time. Still, gambling involves far more than simple mathematical properties. Gamblers use a great deal of social psychology to read their fellow players. Gambling is an art and a science; only the best players can synthesize the two to reap millions.