Question

If A and B are mutually exclusive, and if P(A) = 45% and P(B)=42%, what is P(A or B)?

P(A or B)=%

Answer 1

If A and B are mutually exclusive, then it is impossible for both events to occur at the same time. Therefore, the probability of A or B occurring is simply the sum of the probabilities of A and B.

P(A or B) = P(A) + P(B) = 45% + 42% = 87%

Therefore, the probability of A or B occurring is 87%.