【判断题】【消耗次数:1】
袋中有白球4个,黑球2个,连取两球,取出不放回,如果已知第一个是白球,则第二个球是白球的概率为3/4。
正确
错误
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【判断题】 袋中有白球4个,黑球2个,连取两球,取出不放回,如果已知第一个是白球,则第二个球是白球的概率为3/5。
①  正确
②  错误
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①  正确
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