This page defines key probability terminology, including events A and B, sample space S, and associated probabilities. It explains independent events (probabilities that multiply) and mutu...This page defines key probability terminology, including events A and B, sample space S, and associated probabilities. It explains independent events (probabilities that multiply) and mutually exclusive events (no overlap). The page also outlines two fundamental rules: the multiplication rule for joint probabilities and the addition rule for the union of events.