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Given a plane graph, G having 2 connected component, having 6 vertices, 7 edges and 4 regions. What will be the number of connected components?(a) 1(b) 2(c) 3(d) 4Origin of the question is Undirected Graph in chapter Graph of Data Structures & Algorithms II had been asked this question during an internship interview.

Answer»

The correct option is (b) 2

Easiest EXPLANATION - EULER’s IDENTITY says V – E + R= 1+ NUMBER of connected components.



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