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# How many different combinations are there for sudoko grids?

Question #111782. Asked by jonsmith1963. (Dec 29 09 4:14 PM)

looney_tunes

The first known calculation of the number of classic 9×9 Sudoku solution grids was posted on the USENET newsgroup rec.puzzles in September 2003 and is 6,670,903,752,021,072,936,960 (sequence A107739 in OEIS).

http://en.wikipedia.org/wiki/Sudoku

 Dec 29 09, 4:19 PM

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