1差点做错的:讲有140 张cards 分给m个人,eachperson at least get 2 cards,求the 【numbers】of possible value of m. 不记得有没有限定m>2了 选项A.five B. six C. eight D.ten E不记得 其实就把140除2得70,再考察70可被几个数整除 For this question, it has to specify that each person receives the same amount of cards. Otherwise, from 70 to 2 are all possible numbers. -- by 会员 sdcar2010 (2010/12/25 23:58:16)
i also agree with that, shoulld be one condition that the same amount of card each person received added in. is the answer A? 2 70 4 35 4 28 7 20 10 14 一共有5组分法。。 |