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What type of graph has chromatic number less than or equal to 2?

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in Data Structures & Algorithms II by (89.2k points)
What type of graph has chromatic number less than or equal to 2?

(a) Histogram

(b) Bipartite

(c) Cartesian

(d) Tree

I have been asked this question in a job interview.

My question comes from Bipartite Graphs in chapter Bipartite Graphs of Data Structures & Algorithms II

1 Answer

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Best answer
Right answer is (b) Bipartite

Explanation: A graph is known as bipartite graph if and only if it has the total chromatic number less than or equal to 2. The smallest number of graphs needed to color the graph is chromatic number.

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