原文地址:数学之美作者:王祖哲下面这些东西,是我从一个外国网站偷来的,是数学家搞出来的吧.数字之间竟然埋藏着这种颇有规律的东西,真是耐人寻味. 1 x 8 + 1 = 9 12 x 8 + 2 = 98 123 x 8 + 3 = 987 1234 x 8 + 4 = 9876  x 8 + 5 =   x 8 + 6 =   x 8 + 7 =   x 8 + 8 =   x 8 + 9 =  - 我把上面这组中的常数8改为9,看如何: 1 x 9 + 1 = 10 12 x 9 + 2 = 110 123 x 9 + 3 = 1110 1234 x 9 + 4 =  [往下不要算了,知道规律了:最后的加数为n,结果等于n个1添上一个0]  x 9 + 5 =   x 9 + 6 =   x 9 + 7 =   x 9 + 8 =   x 9 + 9 =  哟呵,好像也不奇怪了:似乎只要最后的加数是有序的,那么结果也是有序的. 如果我命令最后的加数从2开始,如何呢? 1 x 9 + 2 = 11 12 x 9 + 3 = 111 123 x 9 + 4 = 1111 1234 x 9 + 5 =   x 9 + 6 =   x 9 + 7 =   x 9 + 8 =   x 9 + 9 =   x 9 + 10 =  我靠,我白干了,下面的就是啊!不玩了. - 1 x 9 + 2 = 11 12 x 9 + 3 = 111 123 x 9 + 4 = 1111 1234 x 9 + 5 =   x 9 + 6 =   x 9 + 7 =   x 9 + 8 =   x 9 + 9 =   x 9 +10=  - 9 x 9 + 7 = 88 98 x 9 + 6 = 888 987 x 9 + 5 = 8888 9876 x 9 + 4 =   x 9 + 3 =   x 9 + 2 =   x 9 + 1 =   x 9 + 0 =  我把上面这一组里的常数9改为8,看看会怎么样: 9 x 8 + 7 = 79 98 x 8 + 6 = 790 987 x 8 + 5 = 7901 9876 x 8 + 4 =   x 8 + 3 =   x 8 + 2 =   x 8 + 1 =   x 8 + 0 =  哟呵!只要有序,好像怎么都成:有序必定产生有序!