作业帮双语离散,求翻译解答The notation Kn denotes the complete graph on n ve
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双语离散,求翻译解答
The notation Kn denotes the complete graph on n vertices. Kn is the simple graph that contains exactly one edge between each pair of distinct vertices. How many edges comprise a K20?
a) 190 b) 40 c) 95 d) 380
The notation Kn denotes the complete graph on n vertices. Kn is the simple graph that contains exactly one edge between each pair of distinct vertices. How many edges comprise a K20?
a) 190 b) 40 c) 95 d) 380
19+18+17+.+3+2+1=19x(19+1)÷2=19x20÷2=190
选a
补充题目翻译：
符号Kn表示有n个顶点的完全图.Kn是每对不同顶点之间只有一条边的简单图.一个K20图包含多少条边?
就是一个Kn完全图包含的边数是n(n-1)/2
选a
补充题目翻译：
符号Kn表示有n个顶点的完全图.Kn是每对不同顶点之间只有一条边的简单图.一个K20图包含多少条边?
就是一个Kn完全图包含的边数是n(n-1)/2
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