三个人独立地去破译一份密码,每人能独立译出这份密码的概率分别为1/5,1/3,1/4则这份密码被译出的概率为( )。A. 1/3 B. 1/2 C. ...

作者: tihaiku 人气: - 评论: 0
问题 三个人独立地去破译一份密码,每人能独立译出这份密码的概率分别为1/5,1/3,1/4则这份密码被译出的概率为( )。
选项 A. 1/3 B. 1/2 C. 2/5 D.3/5
答案 D
解析

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