用3个0和1,2,3,4这七个数字组成七位数.(全部)
问题描述:
用3个0和1,2,3,4这七个数字组成七位数.(全部)
答
1000234,1000243,1000324,1000342,1000423,1000432,1002034,1002043,1002304,1002340,1002403,10024301003024,1003042,1003204,1003240,1003402,1003420太多了...自己找规律吧