Given that P(A)=0.4,P(B)=0.7,P(A∩B)=0.2, find
If P(A) = 0.8, P(B) = 0.5 and P(B|A) = 0.4, find
(i) P(A ∩ B) (ii) P(A|B) (iii) P(A ∪ B)