60个球 其中10个红球 20个蓝球 30个黄球 不放回抽取 用1-60随机排列模拟计算各个颜色的球先被抽完的概率-60 balls of which 10 red balls 20 basketball 30 yellow balls drawn without replacement with probability 1-60 randomly arranged simulated various colored balls before being smoked in