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Of the households in a certain survey, $$\frac{3}{5}$$ own computers and $$\frac{1}{3}$$ own cell phones. If $$\frac{1}{2}$$ of the households that own computers also own cell phones, what fraction of the households in the survey own neither computers nor cell phones?
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· 相关考点
6.4.3 独立事件
6.4.3 独立事件
以上解析由 考满分老师提供。
