Find P (A or B), if the events are disjointed. P (A) = 9/25 P (B) = 9/25

The Probability of A or B that are disjointed events are mutually exclusive. This means, the probability of the two disjoint events happening can be determine using the formula, P (A or B) = P (A) + P (B)

P (A or B) = P (A) + P (B)

P (A or B) = 9/25 + 9/25

P (A or B) = 18/25

The probability of two disjoint events A or B is 18/25 or 0/72 or 72%.