九个数字选三个有多少组合怎么算

简介：He knew that Li Chu's cultivation level was not low, and the Heavenly Characters passed down in Chaotian Palace were average, and he was generally a person in the realm of decline or even half-step to the level of earthly immortal. So when the news of the death of King Donghai came, the Shenluo City resident immediately asked Chaoge City for help.