OG数学习题求助

famousfatboy · 发表于 2018-5-15 13:23:00

OG习题，百思不得解，求教大神：
每个学校只抽两节课，为什么会出现老师教三节课，跨学校上课？万分感激
A certain experimental mathematics program was tried out in 2 classes in each of 32 elementary schools and involved 37 teachers. Each of the classes had 1 teacher and each of the teachers taught at least 1, but not more than 3, of the classes. If the number of teachers who taught 3 classes is n, then the least and greatest possible values of n, respectively, are
A 0 and 13
B 0 and 14
C 1 and 10
D 1 and 9
E 2 and 8

Waheed · 发表于 2018-5-15 14:33:07

32个学校，每个学校2个班，一共64个班。37个老师给这64
个班上课，每个老师最少上一个班，最多上三个班，求上三个班的老师的最大值和最小值。

famousfatboy · 发表于 2018-5-15 20:18:54

Waheed 发表于 2018-5-15 14:33
32个学校，每个学校2个班，一共64个班。37个老师给这64
个班上课，每个老师最少上一个班，最多上三个班，求 ...

谢谢，理解时一头扎进误区了，老师不一定在本校上课，看答案的时候还没缓过来。。。。

OG数学习题求助

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