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In a group of 10 employees, 4 are good at computer. If 3 employees are randomly selected from the group, what is the probability that at least 2 employees selected are good at computer?
Give your answer as a fraction.
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· 相关考点
6.4.1 古典概率
6.4.1 古典概率
以上解析由 考满分老师提供。
