威力彩頭獎越高越想買是理性的嗎? - 閒聊

By Gilbert
at 2020-07-16T23:12
at 2020-07-16T23:12
Table of Contents
威力彩獎金只有5億時不會想買,
但有15億時就很想買。
明明中頭獎機率一樣低才約1/2000W,
這麼低的期望值變三倍也沒多少。
5Ex1/2000W=25元
15Ex1/2000W=75元
一張彩卷100元,
買起來根本不划算啊!
不過如果變成20E就划算了啦!
下禮拜一就20E了噢!
https://i.imgur.com/o2K3wi9.jpg
--
但有15億時就很想買。
明明中頭獎機率一樣低才約1/2000W,
這麼低的期望值變三倍也沒多少。
5Ex1/2000W=25元
15Ex1/2000W=75元
一張彩卷100元,
買起來根本不划算啊!
不過如果變成20E就划算了啦!
下禮拜一就20E了噢!
https://i.imgur.com/o2K3wi9.jpg

--
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