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6-7 為題組題如下圖,將四個頂點用 x( x ≥ 2 )種顏色塗色,要求線段相連的任兩點必須不同色,滿足這些條件的著色方法有 f (x)種 。【題組】6.選出正確選項:(A)f(2)=1(B)f(3
問題詳情
6-7 為題組題如下圖,將四個頂點用 x( x ≥ 2 )種顏色塗色,要求線段相連的任兩點必須不同色,滿足這些條件的著色方法有 f (x)種 。
【題組】6.選出正確選項:
(A)f(2)=1
(B)f(3)=6
(C)f(4)=48
(D)f(2)=120
參考答案
答案:B,C
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