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The column sum in an incidence matrix for a simple graph is __________(a) depends on number of edges(b) always greater than 2(c) equal to 2(d) equal to the number of edgesThe above asked question is from Incidence Matrix and Graph Structured Stack in section Graph of Data Structures & Algorithms II have been asked this question in exam.

Answer»

Right option is (c) equal to 2

Easy explanation - For every edge only the vertices with which it is connected WOULD have the value 1 in the matrix, as an edge connects two vertices sum will ALWAYS be 2.



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