| 原文是： |
| 送交者: gugeren 2019月05月01日16:10:51 于 [灵机一动] 发送悄悄话 |
| 回 答: 趣味的数学-58 由 gugeren 于 2019-04-29 17:24:06 |
|
2】Successive Wins To encourage Elmer's promising tennis career, his father offers him a prize if he wins (at least) 2 tennis sets in a row in a 3-set series to be played with his father and the club champion alternately: |
|
|
 | ||
|
 |
| 实用资讯 | |
|
|
| 一周点击热帖 | 更多>> |
| 一周回复热帖 |
| 历史上的今天：回复热帖 |
| 2016: | 水银桶转动的圆柱壳数学模型 | |
| 2016: | 在绝对空间里解那个反射式天文望远镜镜 | |
| 2015: | 出题老师你出来 你来算算 | |
| 2015: | 高智商题9解 | |
