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Special Natural Numbers (Posted on 2007-10-14) Difficulty: 3 of 5
Find all natural numbers which can be written in the form (a+b+c)2/(abc) where a,b,c are also natural numbers.

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Answer Comment 8 of 8 |
The required numbers are: 1,2,3,4,5,6,8,9
  Posted by K Sengupta on 2008-12-28 00:43:16
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