袋中有6张卡片,编号分别是1,2,3,4,5,6现在从袋中任取3张卡片,求抽出3张卡片的最大号码为4的概率.
袋中有6张卡片,编号分别是1,2,3,4,5,6现在从袋中任取3张卡片,求抽出3张卡片的最大号码为4的概率.
其他人气：943 ℃时间：2020-03-30 15:12:05
优质解答
总数为c63=20三张中最大为4的总数为三种124.134.234 c6
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