Let A and B be any two arbitrary events, then, which one of the following is…

GATE · 1994 · CS · Question 1 subparts

1. A.

   P(A ∩ B) = P(A)P(B)

2. B.

   P(A ∪ B) = P(A) + P(B)

3. C.

   P(A|B) = P(A ∩ B)P(B)

4. D.

   P(A ∪ B) ≤ P(A) + P(B)