Methods of enumeration used in probability theory.

To calculate probabilities, we apply the rules and principles that govern probability theory.

### Example

When rolling a six-sided fair die, the possible outcomes are: Ω = {1, 2, 3, 4, 5, 6}.

In this situation, the probability of getting a 3 is given by: P(3) \(=\frac{1}{6}\).