An experiment is a situation involving chance or probability that leads to results called outcomes.
An outcome is the result of a single trial of an experiment.
An event is one or more outcomes of an experiment.
Probability is the measure of how likely an event is.
In order to measure probabilities, mathematicians have devised the following formula for finding the probability of an event.
(Probability of an Event) = (the number of ways Event a can occur) / (the total number of possible Outcomes)