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No Plagiarism!V9u65cHL9fnrXXLawoE3posted on PENANA 今天看到我的湘湘姊姊苦惱一題數學題,我當然要把它做出來才行。8964 copyright protection523PENANA0jnBGDh1mw 維尼
題目是:「庭院深深深幾許,三深不能排一起」有幾種排列方式。8964 copyright protection523PENANA4Rn1eMeu0Q 維尼
527Please respect copyright.PENANAHoCJJBd64P
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這題看似複雜其實就兩個思緒而已,扣除法和安插法。8964 copyright protection523PENANAzReTYMQKVP 維尼
527Please respect copyright.PENANAqp4nnu9nIz
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扣除法:算出全部可能後扣除三深的情況。8964 copyright protection523PENANABDBuA6OdDw 維尼
安插法:將三個深分別安插,再將兩深併攏一深獨立後安插。8964 copyright protection523PENANAhUqdmgNt4l 維尼
527Please respect copyright.PENANA3rGFGk58X0
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提示到這邊,留言看看誰算對了!8964 copyright protection523PENANAUncvWalRF3 維尼
18.222.23.166
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