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No Plagiarism!3AsirQC3uvuQDr11mnsDposted 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 protection645PENANAt1Ta6r1DsW 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 protection645PENANAzl1fhS8b4j 維尼
649Please respect copyright.PENANAFQkj2S0GjT
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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 protection645PENANAcAfD4KTKm3 維尼
649Please respect copyright.PENANAwM2Pn0MSEC
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扣除法:算出全部可能後扣除三深的情況。8964 copyright protection645PENANAgz10TSA3H3 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 protection645PENANAEv5hLiHR8k 維尼
649Please respect copyright.PENANAAdDdufY9pm
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提示到這邊,留言看看誰算對了!8964 copyright protection645PENANAen9dsskFBl 維尼
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