某次篮球比赛,赛制为每两队之间赛一场,共进行了45场比赛,则有多少篮球队参加比赛?
人气：188 ℃ 时间：2019-10-29 19:56:21
解答
设有x支队伍参加了比赛
则(x-1)x/2=45
x=10
有10支队伍参加了比赛
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