If G is a wheel graph with even number of vertices then the chromatic number of G is________

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Solution

The correct option is B 4
option (a)

If G is a wheel graph with n vertices, then
$T h e c h r o m a t i c n u m b e r o f G = {\begin{matrix} 4, if n is even 3, if n is odd \end{matrix}$

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