19 Apr 2013 @ 12:18 AM 
 

進階教學(4)—-同字不相鄰問題

 

把 a a b b b c d e f 九個字母排一列，求同字不相鄰的排法有_____種。

 

 

                                          詳解請看【插頁】\【進階教學】

練習

把 a a b b b c d e 八個字母排一列，求同字不相鄰的排法有_____種。

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Categories: 數學 Posted By: 我是大富翁
Last Edit: 06 May 2013 @ 01 55 AM

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