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Increasing sequences (Posted on 2015-11-30) Difficulty: 3 of 5
List all the 3X3 arrays of nine distinct positive digits such that each of the rows and each of the columns is an increasing sequence.
Example: 1,2,5; 3,4,7; 6,8,9.

See The Solution Submitted by Ady TZIDON    
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Some Thoughts How about...? | Comment 2 of 3 |
Analytical solution, anyone?
  Posted by Ady TZIDON on 2015-12-01 21:10:48
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