The formula for determining the number of communication channels is the combinatorial formula for the number of pairs you can select from n items, without regard to order. The formula 4 is as follows

决定沟通连接数量的公式就是你从数量n中挑选出配对数量的公式，不必考虑顺序。

youdao

The formula for determining the number of communication channels is the combinatorial formula for the number of pairs you can select from n items, without regard to order. The formula 4 is as follows

决定沟通连接数量的公式就是你从数量n中挑选出配对数量的公式，不必考虑顺序。

youdao