2. 外语
  3. Suppose you want to select a 3-person committee from a group of 9 students. How many ways are there to do this?

Suppose you want to select a 3-person committee from a group of 9 students. How many ways are there to do this?

admin2018-12-14  79
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://kaotiyun.com/show/20kO777K
本试题收录于： GRE QUANTITATIVE题库GRE分类
0

GRE QUANTITATIVE

GRE

相关试题推荐
随机试题
最新回复(0)