(1)P(B)=P(BA)+P(B\bar{A})=P(B\bar{A})=1/2(2)P(B\bar{A})=P(B)-P(A)=1/6(3)P(A)=P(BA)+P(A\bar{B})=1/3, P(A\bar{B})=1/3-1/8=5/24
