甲地到乙地有A1,A2两条路线,从乙地到丙地有B1,B2,B3三条路线,从丙地到丁地有C1,C2两条路线,一个人任意选了一条从甲地到丁地的路线,求他恰好选到B2的路线概率是多少?(尽量用树状图来做)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 06:44:28
![甲地到乙地有A1,A2两条路线,从乙地到丙地有B1,B2,B3三条路线,从丙地到丁地有C1,C2两条路线,一个人任意选了一条从甲地到丁地的路线,求他恰好选到B2的路线概率是多少?(尽量用树状图来做)](/uploads/image/z/7635558-30-8.jpg?t=%E7%94%B2%E5%9C%B0%E5%88%B0%E4%B9%99%E5%9C%B0%E6%9C%89A1%2CA2%E4%B8%A4%E6%9D%A1%E8%B7%AF%E7%BA%BF%2C%E4%BB%8E%E4%B9%99%E5%9C%B0%E5%88%B0%E4%B8%99%E5%9C%B0%E6%9C%89B1%2CB2%2CB3%E4%B8%89%E6%9D%A1%E8%B7%AF%E7%BA%BF%2C%E4%BB%8E%E4%B8%99%E5%9C%B0%E5%88%B0%E4%B8%81%E5%9C%B0%E6%9C%89C1%2CC2%E4%B8%A4%E6%9D%A1%E8%B7%AF%E7%BA%BF%2C%E4%B8%80%E4%B8%AA%E4%BA%BA%E4%BB%BB%E6%84%8F%E9%80%89%E4%BA%86%E4%B8%80%E6%9D%A1%E4%BB%8E%E7%94%B2%E5%9C%B0%E5%88%B0%E4%B8%81%E5%9C%B0%E7%9A%84%E8%B7%AF%E7%BA%BF%2C%E6%B1%82%E4%BB%96%E6%81%B0%E5%A5%BD%E9%80%89%E5%88%B0B2%E7%9A%84%E8%B7%AF%E7%BA%BF%E6%A6%82%E7%8E%87%E6%98%AF%E5%A4%9A%E5%B0%91%3F%EF%BC%88%E5%B0%BD%E9%87%8F%E7%94%A8%E6%A0%91%E7%8A%B6%E5%9B%BE%E6%9D%A5%E5%81%9A%EF%BC%89)
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