Probability

• P(A∪B)= P(A) + P(B) if mutually exclusive
• P(A∪B) = P(A) + P(B) - P(A∩B) if not mutually exclusive
• P(A∩B) = P(A) x P(B) if independent
• P(A∩B) - i∩tersection
• P(A∪B) - ∪nion
• mutually exclusive- can't happen at the same time
• independent- one happening doesn't effect the other