Question: if a and b are mutually exclusive events with p(a) = p(b) = then p(a or b) equals?
Answer: The probability that Events A and B both occur is the probability of the intersection of A and B. The probability of the intersection of Events A and B is denoted by P(A ∩ B). If Events A and B are mutually exclusive, P(A ∩ B) = 0.