A simple graph is regular if every vertex has the same degree.
(a) For which positive integers n are the following graphs regular: C_n, W_n, K_n, Q_n?
(b) For which positive integers m and n is K_m,n regular?

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The Answer of A simple graph is regular if every vertex has the same degree. (a) For which positive integers n are the following graphs regular: C_n, W_n, K_n, Q_n? (b) For which positive integers m and n is K_m,n regular?

A Simple Graph Is Regular If Every Vertex Has the Same