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

Related Questions

• What is the chromatic number of compliment of line graph of bipartite graph?
• Which one of the following is the chromatic number of bipartite graph?
• It is possible to have a negative chromatic number of bipartite graph.
• A k-regular bipartite graph is the one in which degree of each vertices is k for all the vertices in the graph. Given that the bipartitions of this graph are U and V respectively. What is the relation between them?
• A complete bipartite graph is a one in which each vertex in set X has an edge with set Y. Let n be the total number of vertices. For maximum number of edges, the total number of vertices hat should be present on set X is?
• Consider a complete graph G with 4 vertices. The graph G has          spanning trees.
• Consider a undirected graph G with vertices { A, B, C, D, E}. In graph G, every edge has distinct weight. Edge CD is edge with minimum weight and edge AB is edge with maximum weight. Then, which of the following is false?
• Every Perfect graph has forbidden graph characterization.
• If all the weights of the graph are positive, then the minimum spanning tree of the graph is a minimum cost subgraph.
• Consider the graph shown below. Which of the following are the edges in the MST of the given graph?