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← Logic & PuzzlesWhat happens to the chromatic number of a directed acyclic graph when the number of nodes doubles?
A)Chromatic number always doubles
B)Chromatic number decreases significantly
C)Chromatic number approaches infinity
D)Chromatic number remains the same✓
💡 Explanation
The chromatic number of a directed acyclic graph remains one because such graphs can always be topologically sorted and colored with a single color. This is because no cycles exist, therefore no adjacency forces different colors, rather than the number of nodes impacting color choices, only edges do.
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