For two mutually exclusive events, what does the addition law of probability state?

1. A Option A: P(A∩B) = P(A).P(B)
2. B Option B: P(A∩B) = P(A) + P(B) + P(A∩B)
3. C Option C: P(A∪B) = P(A) + P(B) – P(A∩B)
4. D Option D: P(A∪B) = P(A) + P(B)

Answer checked 11 October 2026 · How we write and check questions