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～
T = {2, 3, 4, 5, 6, 7, 8}
Quantity A
The total number of positive 4-digit integers that can be formed where each digit is in set T and the 4 digits in each 4-digit integer are different from each other
Quantity B
(7)(6)(5)(4)
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。
