更新1:
Also, how are problems like this solved?
How many different groups can be formed from 6 teachers and 30 students if the group consists of 3 teachers and 3 students?
回答 (1)
2017-05-09 3:51 am
C(6,3)*C(30,3)
= [6*5*4/(3*2*1)] * [30*29*28/(3*2*1)]
= 20 * 5 * 29 * 28 = about 90000 but use a calculator.
= [6*5*4/(3*2*1)] * [30*29*28/(3*2*1)]
= 20 * 5 * 29 * 28 = about 90000 but use a calculator.
收錄日期: 2021-04-24 00:24:11
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170508194720AAHwMbg