112. V1.assume x flights，an airplane company, fly between n cities, 2 non stop flight per day, ask how many flights during the day(?)作者: Calcium99 时间: 2012-1-6 07:08
n(n-1)
还是 2n(n-1)作者: Calcium99 时间: 2012-1-6 07:09
LZ 认为n(n-1)更靠谱 不知。。
欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/)
