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12 digit number (Posted on 2007-01-22) Difficulty: 3 of 5
A 12 digit number is formed using these rules:

* You can only use digits 1,5 and 9 (base 10)
* The number is divisible by 37

Prove that the sum of the digits is not 76

No Solution Yet Submitted by atheron    
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  Subject Author Date
SolutionAnother ApproachGamer2007-01-23 02:24:04
Hints/Tipsunsatisfying proof, by exhaustion, but may serve as a hintCharlie2007-01-22 11:26:10
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