Ruby China

瞎扯淡 很荣幸和 ruby-china 一起过生日

alucardpj · October 28, 2015 · Last by psvr replied at October 28, 2015 · 1825 hits

祝 ruby-china 越办越好！

2 likes
so_zengtao #1 October 28, 2015

今天也是我生日。

psvr #3 October 28, 2015

哈哈 好巧！生日快乐！

psvr #4 October 28, 2015

由此想起生日悖论：一个房间里有 23 个或 23 个以上的人，那么至少有两个人的生日相同的概率要大于 50%

oneapm #5 October 28, 2015

生日快乐 🍰

tina703_ #7 October 28, 2015

哈哈 生日快乐

psvr #8 October 28, 2015

@wskongdesheng 推导过程这里有哦：https://en.wikipedia.org/wiki/Birthday_problem

我一般只能记得住结论：

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