最新提问
我的动态
登录后查看动态
题目内容
A list consists of 24 different positive four-digit integers ordered from least to greatest. Each integer in the list consists of the four digits 6, 7, 8, and 9, without repetitions. If 8,697 is the nth integer in the list, what is the value of n?
n=_____
n=_____
14 显示答案
· 相关考点
6.3.3 排列
6.3.3 排列
以上解析由 考满分老师提供。