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楼主,你把这题目做出来,就可以跳了
There are 24 players in a chess tournament. 8 teams participated with 2 players , and 8 teams participated with 1 player. For the 12 matches in the first round, the pairings will be drawn randomly. What is the probability that at least 4 matches will be played between players from the same school?
Enter your answer as a simplified fraction. Example:12/23
棋手
共有24名选手参加国际象棋比赛。 8支队有2名选手参加,8支队以1名选手参加。 在第一轮的12场比赛,选手之间是随机配对的。
至少有四场比赛是在同一个学校的选手之间进行,这样的概率是多少?
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