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题目内容双击单词支持查询和收藏哦～
Three typists work for four different companies. Each company has one document, and each document can be assigned to any of the three typists. What is the probability that three typists all receive documents?
Give your answer as a fraction.
Give your answer as a fraction.
4 /9显示答案
· 相关考点
6.3.8 其他特殊排列组合技巧
6.3.8 其他特殊排列组合技巧
以上解析由 考满分老师提供。
