最新提问
我的动态
登录后查看动态
题目内容
The numbers of employees in three regional offices of a company are n, p, and q, respectively. Each employee from each office mailed a card to each employee in the other two offices. Which of the following represents the total number of cards mailed by the employees?
C显示答案
· 相关考点
6.3.1 计数原理
6.3.1 计数原理
以上解析由 考满分老师提供。