i agree with you on this too, by eliminating the tricky part "无穷"in the original question.
当n成为有限整数后,每次换信封有更高的, 待值的推断就不成立了,因为当你抽中最大的面值时,换信封就损失很多。总的数学期望是一样的,换或不换。
i.e. if 原题有两个信封, 一个1元, 一个10元, 换不换。。。。
i agree with you on this too, by eliminating the tricky part "无穷"in the original question.
当n成为有限整数后,每次换信封有更高的, 待值的推断就不成立了,因为当你抽中最大的面值时,换信封就损失很多。总的数学期望是一样的,换或不换。
i.e. if 原题有两个信封, 一个1元, 一个10元, 换不换。。。。
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