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[组合] 每一行每一列都无重复数字.

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Tesla35 posted 2019-12-13 23:00 |Read mode
(2017宁波六校高二下期末)小明玩填数游戏:将$1,2,3,4$四个数填到$4\times4$的表格中,要求每一行每一列都无重复数字.小明刚刚填了一格就走开了(如图所示),剩下的表格由爸爸完成,则爸爸共有\blank 种不同的填法.(结果用数字作答)
  1. \begin{figure}[!ht]
  2.         \flushright
  3.         \begin{tikzpicture}[scale=0.8]
  4.         \tikzstyle{every node}=[font=\footnotesize]
  5.         \draw(0,0)grid(4,4);
  6.         \node at(0.5,3.5) {$1$};
  7.         \end{tikzpicture}
  8. \end{figure}
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QQ截图20191213225908.png

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色k posted 2019-12-14 15:36
没看懂题,你确定“将1,2,3,4四个数填到4×4的表格中”这句话没打错?按字面理解就是把1234填进去,哪来的重复……

如果你是想说的是1111222233334444,那就是拉丁方?

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original poster Tesla35 posted 2019-12-14 18:01
回复 2# 色k


    对。

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