數學(數獨組合)2

2006-12-29 9:57 pm
數獨有
9!×72²×2^7×27704267971=670903752021072936960個組合。
(維基百科)

解釋「27704267971」是如何計算出來的。

回答 (1)

2007-01-01 6:22 am
✔ 最佳答案
The largest prime factor of the number of valid Sudoku solution grids for the standard 9x9 grid. It was first calculated by Bertram Felgenhauer in 2005.


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