求助一道英文数学题目~~~

来源：百度知道 编辑：UC知道 时间：2024/05/30 09:27:25
Two eleven-member basketball teams play a game. After the game, each of the members of the winning team shakes hands once with each member of both teams. How many handshakes take place?
要具体的解答过程

两个11人的篮球队进行一场比赛,比赛后,每名胜队的队员和两队的其他队员握手,问一共发生多少次握手;
22个取11组合;
=21+20+19+...+11=176;
共发生176次握手;

排列组合吧~22个人中选2个人任意组合