Probability of a or b mutually exclusive
probability of a or b probability of a or b formula probability of a or b independent probability of a or b symbol probability of a or b independent events probability of a or b mutually exclusive probability of a or b occuring probability of a or b notation probability of a or b calculator how to find probability of a or b probability of either a or b probability of having a boy or girl probability of not a or not b probability of event a or b max or min of a probability distribution 1d6 dice probability of rolling a 1 or a 6