In a meeting of 3 representatives from each of 6 different companies, each person shook hands with every person not from his or her own company. If the representatives did not shake hands with people from their own company, how many handshakes took place?
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2011-6-19 11:49:05
收藏
收藏
