如题所述
第1个回答 2020-04-26
四个字按顺序任意组合可以把它们分别用1,2,3,4四个数表示那么一共有4×3×
2×1=24种，包括1234,1243,1324,1342,1432,1423,2134,2143,2341,2314,2413,2431,3124,3142,3214,3241,3412,3421,4123,4132,4213,4231,4312,4321本回答被网友采纳
2×1=24种，包括1234,1243,1324,1342,1432,1423,2134,2143,2341,2314,2413,2431,3124,3142,3214,3241,3412,3421,4123,4132,4213,4231,4312,4321本回答被网友采纳
