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how to prove it?割2排有3中拼法 割4、6、8、10.。。。。排有2中拼法 如何证明？ 相邻每两列间必有一个砖块相连然后推出非边界的砖块只能横这放 这样就说明只有两种拼法？ 似乎好像。。。。。。 Followed by: Post your reply here: |
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