24 n 個節點的完全圖(complete graph)中所有邊的數量為下列何者?
(A) n(n-1)/2
(B) n2/2
(C) n(n+1)/2
(D)(n+1)2/2
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統計: A(273), B(26), C(70), D(8), E(0) #3226136
統計: A(273), B(26), C(70), D(8), E(0) #3226136