Ask an expert to arrange a table tennis match.

Group A of men's team should be divided into ages, if there are 8 people.

Good grades, that is, male A is divided into two groups, A and B, with four people in each group:

A round of two threes.

1-4 1-3 1-2

2-3 4-2 3-4

Each group has six games.

In this way, the men's team A and B have a single cycle 12 games;

Next, the top two in each group are eligible to enter the second stage of elimination. The competition is the first match between Group A and Group B, and the first match between Group B and Group A is the second match. The winner competes for the third place in the championship and the loser competes for the third place or tied for the third place.

It is also reasonable to choose 8 out of 4 rankings.

Similarly, male group B, female group A and female group B were also carried out according to the above methods.

According to the preliminary calculation, taking the men's team Group A as an example, one match 14, and at most 15 (the third play-off).

The maximum number of games in four groups is 60. If you can play four tables (four groups) at the same time, two and a half days will be enough to play three out of five or three out of seven.

Single loop is a counter-clockwise rotation method with a fixed number of one, that is, four people only have three rounds, the first round is 1-4, the second round is 2-3, and the third round is 1-3 ... This is a common method for single loop of various games, with no repetition and the same interval. For reference only ~ ~