题目内容

某车间生产了同样规格的6箱产品,其中有3箱、2箱、1箱分别是由甲、乙、丙3个车床生产的,且3个车床的次品率依次为0.1,0.15,0.2,现从这6箱中选一箱,再从中任取一件,取得是次品的概率为____ 。(分数的分号用:/)

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从数1,2,3,4中任取一个数,记为X,再从1,2,…,X中任取一个数,记为Y,则P{Y=2}=____ 。(分数的分号用:/)

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