查看会员资料
用 户 名:B*****
发送消息- Email:用户隐藏
- Icq/MSN:
- 电话号码:
- Homepage:
- 会员简介:
最新会员发布资源
Console17(1)
- 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