Question: what do the symbols mean in probability?
Answer: The conditional probability of Event A, given Event B, is denoted by the symbol P(A|B). ... 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.