LEAGUE RESULTSTeam Number of Games WonA 4B 7C 9

游客2025-02-24 48

问题 LEAGUE RESULTS
Team    Number of Games Won
A       4
B       7
C       9
D       2
E       2
X       ?
According to the incomplete table above. If each of the 6 teams in the league played each of the other teams exactly twice and there were no ties. How many games did team X win? (Only 2 teams play in a game. )

选项 A、4
B、5
C、6
D、7
E、10

答案 C

解析根据左侧不完整的表格，若联盟中6支队伍中的每一支都与其他的各支队伍比赛2次，并且没有平局(tie)，X赢得了多少场比赛?(每个比赛只有2支队伍参加)
解：本题的正确答案是(C)。由每支队伍都与另一队伍比赛了2次，且每次必有且仅有1支队伍获胜，可得总的获胜次数为：

。上表中前5项的和为：4+7+9+2+2=24。 30-24=6，所以X胜了6场。

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LEAGUE RESULTSTeam Number of Games WonA 4B 7C 9

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[img]ct_2image026[/img]Ifyisatwo-digitnumberwithtensdigittandunitsd

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