达兰倍尔错在哪里
- 时间:2020-05-16 19:48:28
- 分类:数学世界
- 阅读:148 次
数学家达兰倍尔错在哪里?传说18 世纪法国有名的数学家达兰倍尔不加思索的弄错了下面这个小小的问题:
拿两个五分硬币往下扔,会出现几种情况呢?
他的分析解答是:
情况只有三种:
可能两个都是正面;可能一个是正面,一个是背面,也可能两个都是背面。
因此,两个都出现正面的概率是1∶3。
你想想,错在哪里?
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