5个数字3个为一组有多少组不重复

简介：During the fierce battle, Dorgon immediately watched the battle from a high place. Seeing that the Ming army's formation was stable and difficult to break, and that it was difficult to achieve his tactical goals, he couldn't help but feel sad. I also saw a group of Ming cavalry charging and killing fiercely, and the general was very young, so I asked who that person was? Someone who knew him answered: Guerrilla Tong Dingfang, the son of Tong Hanbang, the commander-in-chief of Jizhou.