Mathematics for IGCSE & O level - Probability (Section 7 - No. 39)

If events A and B are mutually exclusive, what is the probability of either A or B happening? (P(A or B))

P(A) + P(B)

P(A) * P(B)

P(A) - P(B)

1 - P(A) - P(B)

For mutually exclusive events, the probability of either occurring is the sum of their individual probabilities.