67711 wrote:麥當勞組合模式C=49B=39A=29四人餐怎麼算都比二人餐貴2元現在是要欺負人家數學不好? 老師, 我知道我知道 (舉手), 因為If A or B or C appears alone, thenC=50B=40A=30,Otherwise, deducts 2 from all kinds of combination.點二樣以上, 共省二元, 大概那二元是省掉重新熱鍋子的瓦斯費+省掉洗鍋子的費用.
67711 wrote:四人餐怎麼算都比二人餐貴2元現在是要欺負人家數學不好? kusukusu-ball wrote:If A or B or C appears alone, thenC=50B=40A=30,Otherwise, deducts 2 from all kinds of combination. 喂~你們兩個...在這串這麼認真要幹嘛呀~這樣叫下面的人怎麼接呀~