100件产品中有4件次品,现抽取3件检查,3}5m9J.b7@5`7D2j'X-{1F8h9m)s:Q.x
(1)恰好有一件次品的取法有'_-k)f*W2k4u9R.d/m8M种;3}5m9J.b7@5`7D2j'X-{1F8h9m)s:Q.x
(2)既有正品又有次品的取法有.y/}8C3R2G(`9T2y7i9@(w)}9z种.3}5m9J.b7@5`7D2j'X-{1F8h9m)s:Q.x