[Solved] Which of the following is not a property of perfect graph?

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Q.	Which of the following is not a property of perfect graph?
A.	compliment of line graph of bipartite graph
B.	compliment of bipartite graph
C.	line graph of bipartite graph
D.	line graph
Answer» D. line graph
Explanation: tthe compliment of line graph of bipartite graph, compliment of bipartite graph, line graph of bipartite graph and every bipartite graph is known as a perfect graph in graph theory. normal line graph is not a perfect graph whereas line perfect graph is a graph whose line graph is a perfect graph.

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