奇妙生活-神奇数字-9的故事

987654321 * 9 = 08888888889

987654321 * 18 = 17777777778

987654321 * 27 = 26666666667

987654321 * 36 = 35555555556

987654321 * 45 = 44444444445

987654321 * 54 = 53333333334

987654321 * 63 = 62222222223

987654321 * 72 = 71111111112

987654321 * 81 = 80000000001

987654321 * X = ?

X = ab 且 a+b = 9

Y = 987654321 * X

P = 8-a;

Y = aPPPPPPPPPPb;

本文转自 wws5201985 51CTO博客，原文链接：http://blog.51cto.com/yjplxq/914375，如需转载请自行联系原作者