The events A A\,A and B B\,B are such that P(A)=0.4P(A) = 0.4P(A)=0.4, P(B)=0.5P(B) = 0.5P(B)=0.5, P(A∩B)=0.3P(A \cap B) = 0.3P(A∩B)=0.3.
Find P(A∪B)P(A \cup B)P(A∪B).
Find P(A∣B)P(A|B)P(A∣B).
Find P(A′∣B′)P(A'|B')P(A′∣B′).