Re: [問卦] 一道數學難題...消失
你就想成是有365個靠背椅，一個個勃起的人隨機入座
看幾個人的時候有人被肛的機率超過1/2就是了。
算法就n個人不會被肛的機率prob是：P365取n/365^n
所以有人被肛的機率是1-prob
自己去算n=幾的時候1-prob會大於1/2，我算是23
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