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Prove that in a tree with maximum degree , there are at least leaves
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Discrete Mathematics
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admin_rational
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graph
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tree
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Suppose the maximum degree of a tree T is 4. If n1(T) = 20, n2(T) = n3(T) = n4(T), find the number of vertices of T.
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Discrete Mathematics
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admin_rational
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graph
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Give an example of a connected planar graph with $v$ vertices, $e$ edges and $k$ components such $e=3v6k$.
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Discrete Mathematics
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admin_rational
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graph
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