最新提问
我的动态
登录后查看动态
题目内容双击单词支持查询和收藏哦～
A group consisting of 4 adults and 3 children wil occupy 7 adjacent seats in one row of a theater, one person per seat. How many different arrangements of the 7 people are possible such that no two adults and no two children sit next to each
C显示答案
· 相关考点
6.3.4 排列
6.3.4 排列
以上解析由 考满分老师提供。
