Classical Probability
Classical Probability uses sample spaces to determine the numerical probability that an event will happen, assuming all outcomes in the sample space are equally likely to occur.
The formula for the probability for an event \(E\), for a probability experiment with a finite number of outcomes, i.e. a finite sample space, \(S\)
\[P(E)=\frac{\text{number of outcomes in the event }E}{\text{number of outcomes in the sample space}}=\frac{n(E)}{n(S)}=\frac{|E|}{|S|}\]