b***y
发帖数: 2799 | 1 ☆─────────────────────────────────────☆
wmbyhh (wmbyhh) 于 (Thu Jul 17 20:18:04 2008) 提到:
有人给出了答案，但还是不明白。
开始以为“the number is divisible by 2”是说剩余的数，原来指的是取出的数。
Generate a 9 digit number using the number 1-9, without using any number
more than once. this number must also be divisible such that if you take
the left most digit the number is divisible by 1, if you take the two
left most digits the number is divisible by 2, if you take the three left
most digits the number is divisible by 3, etc., |
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