野餐趣题

题目

野餐趣题
100 students gather at a picnic(野餐).85 of them carry a kite,80 of them have a chocolate; 75 of them have bread; and 70 of them bring a bag.Of course,some of them have all of the above(以上都有):kite,chocolate,bread and bag.Of these 100 students,what is the least possible number (最小的数字) who have all of the above?
一百个同学去参加野餐,其中85人带了风筝,80人带了巧克力,75人带面包,70个人带背包,当然,有的人上述东西全带了.请问至少有多少人全部都带了呢?

答案

已解决问题收藏 转载到QQ空间 一百个同学去参加野餐,其中85人带了风筝,80人带了巧克力,75人带面包,70个人带背包,当然,有的人上述东西全带了.请问至少有多少人全部都带了呢?10[ 标签：同学 野餐,风筝,背包 ] 一百个同...