P(A-B) =P(A)-P(A∩B) 0.3 = 0.7-P(A∩B) P(A∩B) =0.4 P(~A∩~B) =P(~(AUB) ) = 1-P(AUB) = 1-[ P(A)+P(B)-P(A∩B) ] = 1-[0.7+0.6-0.4] =0.1
