1!= 1 2!= 2 3!= 6 4!= 24 5! = 120 6! = 720 ... 从5开始,末位数字都是0,所以末尾数字是 1+2+6+24 = 33; 末尾数是3 相关文章: 2022-01-21 2021-09-11 2021-10-08 2022-12-23 2022-12-23 2022-12-23 2021-12-21 2021-10-05