The seed team abcd will be taken out first and will not participate in the first round of lottery.
Efghijklm draws lots with the number 1-9. In the first round, the teams numbered 1 and 9 have to play a game first, and the loser is eliminated. The winner, together with seven other unseeded teams, draws again with the number of 1-8. After the second round, there are four unseeded teams left, and these four unseeded teams draw lots (note that here are four teams drawing lots). .....
Of course, you can tell your teacher that this form of competition is unreasonable after making the above answer. If the venue, time and other conditions permit, it will be better to divide the team into four groups. The fourth group has four teams and each group has three teams. Because if it is a tournament, teams will not pack up and go home after only one game, especially the national championship, which will not bring any exercise value at all. It costs a lot of money, and it is difficult to recruit a team of 13 according to the competition form specified in the topic ... so your teacher will look at you with new eyes.
The second question disagrees with the upstairs statement, that is, the round robin system is not a double round robin system ... so * * * has seven rounds of three games each, *** 18 games.
You should be able to write matching tables,
Abcdefg Team 7 drew 1234567.
The first round 1-2 3-4 5-6 7 Bye.
Round 2-3 4-5 6-7 1 bye.
The third round is 3-4 5-6 7- 1 2. Bye.
See you in the fourth round 4-5 6-7 1-2 3.
The fifth round of 5-6 7- 1 2-3 4 bye.
The sixth round 6-7 1-2 3-4 5 goodbye.
7- 1 2-3 4-5 6 in the seventh round. See you later.
Landlord, I graduated from Beijing Sport University in 2004, and now my students also have sports majors. I advise you to cherish your college time and learn more knowledge. ........