求助，关于OG13 DS (135题) 的问法！

qwe1111111

题目如下：
A school administrator will assign each student in a group of n students to one of m classrooms. If 3 < m < 13 < n, is it possible to assign each of the n students to one of the m classrooms so that each classroom has the same number of students assigned to it?

(1) It is possible to assign each of 3n students to one of m classrooms so that each classroom has the same number of students assigned to it.

(2) It is possible to assign each of 13n students to one of m classrooms so that each classroom has the same number of students assigned to it.

论坛里的解答我可以看明白。
但是，问题问的是“is it possible……？”      是不是问“是否有可能？”

so，
在（1）的条件下，当n=15，m=5时，3n=45，可以被m整除，n也可以被m整除。同样，根据答案，在条件（1）下，题目有时可以满足，有时不可以满足。
所以，答案当然就是“有可能”的。

所以这道题我选的是D。

请各位大神帮忙！

qwe1111111

有没有人给个提示？

ndxica

possible 的意思要分清楚。題目的 n 及 m 是假定在任何條件( (1) or (2) ) 條件成立的情況下，是否可以 "確定" possible 分配完成。For example，如果是 15 個學生 3 個班級，那是 "possible" 可以 assign equal number of students to each class. 如果是 14 個學生 3 個班級，那就是 "impossible" 達到目標。所以 (1) insufficient (2) sufficient

qwe1111111

看来是possible的意思没明白。谢谢大侠！