The gambling maths is a gathering of some of the applications that one faces in games of chance and they may be there in the theory of the game. The various games of chance are experiments that produce different kinds of events. 

To throw dice in craps is an experiment that produces events like occurrences of some numbers on the dice. You have to get some of the exhibited numbers and get numbers with some properties. The space of such an experiment is 1,2,3,4,5,6 for rolling one die or 1,1, 1,2 for rolling two dices. It is a set of ordered pair and counts 6×6=36 elements. The events can be recognized as sets.