P(A)=[C(40^1)*C(40^1)*C(40^1)]/[C(100^1)*C(100^1)*C(100^1)]P(B)=[C(60^1)*C(60^1)*C(40^1)]/[C(100^1)*C(100^1)*C(100^1)]
P(A)=C40(3)/C100(3)P(B)=C60(2)*C40(1)/C100(3)