yukiko wrote:搬316萬硬幣還錢很...(恕刪)
中信小弟 wrote:樓上的,抱歉我統計學沒學好
roger6515 wrote:樓主有正解嘛?
yukiko wrote:指考前公布答案~~~...(恕刪)
Succubus wrote:50w+10x+5y...(恕刪)