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Magic matrix (Posted on 2015-10-26) Difficulty: 2 of 5
The 1 to 9 digits are randomly arranged into a 3x3 array.

Find the probability that the sum of the numbers in every row, column, and diagonal is a multiple of 9.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Solutioncomputer solutionCharlie2015-10-26 10:55:37
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