趣味的数学-63
找出最小的正整数，使得它的各个数位的数字之和，不能被它的各个数字的立方和整除。
【原文】
Find the least natural number having the property that the sum of its digits does not divide the sum of the cubes of its digits.
【引自 The American Mathematical Monthly [AMM]，1948，problem E802】
Typo, 112
如果102是 “-63”的答案，那是错的。
102
Set distance between A and B is Y
V is speed
T and t are time
1. T = xt
2. T*xV = Y + T*V
3. xV*t + v.t = Y
x^2 - 2x -1 =0
以后只给答案，没时间给过程了。
