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Digital-Logic-Design
January 23, 2025
Computer-Organization
January 25, 2025
Digital-Logic-Design
January 23, 2025
Computer-Organization
January 25, 2025

GATE 2009

Question 2

What is the chromatic number of an n-vertex simple connected graph which does not contain any odd length cycle? Assume n ≥ 2.

A
2
B
3
C
n-1
D
n
Question 2 Explanation: 
If n≥ 2 and there are no odd length cycles, then it is a bipartite graph.
A bipartite graph has the chromatic number 2.
Eg: Consider a square, which has 4 edges. It can be represented as bipartite ,with chromatic number 2.
Correct Answer: A
Question 2 Explanation: 
If n≥ 2 and there are no odd length cycles, then it is a bipartite graph.
A bipartite graph has the chromatic number 2.
Eg: Consider a square, which has 4 edges. It can be represented as bipartite ,with chromatic number 2.
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