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1、2021/3/10,讲解:XX,1,不同,顺序,所有不同排列,2021/3/10,讲解:XX,2,n(n1)(n2)(nm1),n!,1,合成一组,所有不同组合,2021/3/10,讲解:XX,3,1,1,2021/3/10,讲解:XX,4,2021/3/10,讲解:XX,5,14,2021/3/10,讲解:XX,6,54,2021/3/10,讲解:XX,7,18,2021/3/10,讲解:XX,8,A,2021/3/10,讲解:XX,9,C,2021/3/10,讲解:XX,10,2021/3/10,讲解:XX,11,2021/3/10,讲解:XX,12,2021/3/10,讲解:XX,13,
2、2021/3/10,讲解:XX,14,2021/3/10,讲解:XX,15,2021/3/10,讲解:XX,16,思维启迪:,2021/3/10,讲解:XX,17,2021/3/10,讲解:XX,18,2021/3/10,讲解:XX,19,2021/3/10,讲解:XX,20,16,2021/3/10,讲解:XX,21,2021/3/10,讲解:XX,22,2021/3/10,讲解:XX,23,2021/3/10,讲解:XX,24,B,2021/3/10,讲解:XX,25,2021/3/10,讲解:XX,26,2021/3/10,讲解:XX,27,2021/3/10,讲解:XX,28,2021/3/10,讲解:XX,29,2021/3/10,讲解:XX,30,2021/3/10,讲解:XX,31,2021/3/10,讲解:XX,32,返回,2021/3/10,33,感谢您的阅读收藏,谢谢!,