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标题: 2010年Puzzleup数学竞赛−第15题: Number Pairs [打印本页]

作者: castelu 时间: 2010-10-24 02:39
标题: 2010年Puzzleup数学竞赛−第15题: Number Pairs

Number Pairs

We have a number that is written by using numerals exactly twice. The number of digits between each pair is different.

What is the possible maximum value for this number?

Example: 988797 is such a number (There are 3 digits between two 9's,zero digits between two 8's, and one digit between two 7's).

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