甲袋中有白球1991个和黑球1000个,乙袋有2000个黑球,随意莫两球在外面,如果摸出的球同色 ,就从乙袋取出1个黑球放入甲袋,如果摸出的球异色,就将白球放回甲袋,问从甲袋中摸了2989次球后,甲袋
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/15 03:24:10
![甲袋中有白球1991个和黑球1000个,乙袋有2000个黑球,随意莫两球在外面,如果摸出的球同色 ,就从乙袋取出1个黑球放入甲袋,如果摸出的球异色,就将白球放回甲袋,问从甲袋中摸了2989次球后,甲袋](/uploads/image/z/13364620-52-0.jpg?t=%E7%94%B2%E8%A2%8B%E4%B8%AD%E6%9C%89%E7%99%BD%E7%90%831991%E4%B8%AA%E5%92%8C%E9%BB%91%E7%90%831000%E4%B8%AA%2C%E4%B9%99%E8%A2%8B%E6%9C%892000%E4%B8%AA%E9%BB%91%E7%90%83%2C%E9%9A%8F%E6%84%8F%E8%8E%AB%E4%B8%A4%E7%90%83%E5%9C%A8%E5%A4%96%E9%9D%A2%2C%E5%A6%82%E6%9E%9C%E6%91%B8%E5%87%BA%E7%9A%84%E7%90%83%E5%90%8C%E8%89%B2+%2C%E5%B0%B1%E4%BB%8E%E4%B9%99%E8%A2%8B%E5%8F%96%E5%87%BA1%E4%B8%AA%E9%BB%91%E7%90%83%E6%94%BE%E5%85%A5%E7%94%B2%E8%A2%8B%2C%E5%A6%82%E6%9E%9C%E6%91%B8%E5%87%BA%E7%9A%84%E7%90%83%E5%BC%82%E8%89%B2%2C%E5%B0%B1%E5%B0%86%E7%99%BD%E7%90%83%E6%94%BE%E5%9B%9E%E7%94%B2%E8%A2%8B%2C%E9%97%AE%E4%BB%8E%E7%94%B2%E8%A2%8B%E4%B8%AD%E6%91%B8%E4%BA%862989%E6%AC%A1%E7%90%83%E5%90%8E%2C%E7%94%B2%E8%A2%8B)
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