2. 职称英语
  3. Suppose you want to select a 3-person committee from a group of 9 students. How

Suppose you want to select a 3-person committee from a group of 9 students. How

游客2025-02-23  29
问题 Suppose you want to select a 3-person committee from a group of 9 students. How many ways are there to do this?
选项
答案 84
解析 Since the 3 students on the committee are not ordered, you can use the formula for the combination of 9 objects taken 3 at a time, or "9 choose 3":
转载请注明原文地址:https://tihaiku.com/zcyy/3969946.html
相关试题推荐
随机试题
最新回复(0)