一学生接连参加同一课程的两次考试第一次及格的概率为p若第一次及格则第二次及格的概率也为p;若第一次不及格则第二次及格的概率为 54 Template




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tomski一学生接连参加同一课程的两次考试第一次及格的概率为p若第一次及格则第二次及格的概率也为p;若第一次不及格则第二次及格的概率为 54 coloring