a simple graph has 15 edges ,1 vertex of degree 4,4 vertex of degree 3 and all others of degree 2.how many vertex does the graph have
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Explanation:
A directed graph with an vertices and e edges are represented by adjacency matrix. 0(n) is the time required to determine the in-degree of a vertex.
A directed graph is a set of vertices and a collection of directed edges that each connects an ordered pair of vertices. We say that a directed edge points from the first vertex in the pair and points to the second vertex in the pair.
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