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Puzzle K-3.  SUDOKU

Fill in the matrix so that every row, every column, and every 3x3 box, contains the numbers 1 through 9.  This also means that no repetition of numbers is allowed in each column, row, or 3X3 box.





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Bits and Beyond ...


An integer is called a perfect number if it is equal to the sum of all of its positive factors, excluding itself.  The first perfect number is 6 because 6=1+2+3, where 1, 2 and 3 are the factors of 6.  The next is 28 because 28=1+2+4+7+14.  The next two are 496 and 8128. 


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