Rubyfrancis

This probability reference sheet covers key set and probability concepts, starting with six Venn diagram rules: union (A or B or both), intersection (both A and B), complement (not in A), mutually exclusive (no overlap), A only (A but not B), and B only (B but not A), plus a tip for correct shading. It also includes core probability formulas—such as the basic probability definition, the complement rule, and rules for mutually exclusive, independent, and conditional events—alongside the addit...