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Jhj16888
· about 21 hours ago
我们来玩一个抛硬币的游戏:👇
1. 正面,资产会翻倍(加 100%)
2. 反面,资产会损失 60%
数学告诉我们,这个游戏是正期望的(0.5×2+0.5×0.4=1.2),但为什么作者却说最后所有人的资产都会归零呢?🧵
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