1-1/8=p(A)+p(B)+p(C)-P(AB)-P(BC)
P(AB)+P(BC)=1/2+1/4+3/8-7/8=1/4
P(AB)=P(A)*P(B)=1/2*1/4=1/8
P(BC)=1/4-1/8=1/8
P(B|C)=P(B)+P(C)-P(BC)=1/4+3/8-1/8=1/2
1-1/8=p(A)+p(B)+p(C)-P(AB)-P(BC)
P(AB)+P(BC)=1/2+1/4+3/8-7/8=1/4
P(AB)=P(A)*P(B)=1/2*1/4=1/8
P(BC)=1/4-1/8=1/8
P(B|C)=P(B)+P(C)-P(BC)=1/4+3/8-1/8=1/2