A school administrator will assign each students 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
答案是B, 可是我不知道為什麼?
