Question 1184775
(a)   P(Y'|M) = P(Y'∩M)/P(M) = {{{((118/600))/((280/600)) = 59/140}}}


(b)   P(Y|M') = P(Y∩M')/P(M') = {{{((256/600))/((320/600)) = 4/5}}}


(c)   P(Y'|M') = P(Y'∩M')/P(M') = {{{((64/600))/((320/600)) = 1/5}}}


(d)    The complement of the event Y|M is Y'|M (without needing any calculation to verify).