6个数字有多少种排列方式

简介：Jiang Shouyin came to Li Chu, cupped his hands and said: "Pindao is Chaoge Shenxuguan, Jiang Shouyin." A few apprentice nephews were rude just now, so I ask fellow Taoists to forgive me. Meeting with fellow Taoists again, I also have some questions that I really want to ask.