Question: nput: An undirected graph G = ( V , E ) and a positive integer k . Output: TRUE if there is a vertex, v

nput: An undirected graph G =(V, E) and a positive integer k.
Output: TRUE if there is a vertex, v in V , such that there is an edge from
v to at least k other vertices and no pair of those k vertices are connected
by an edge.
Being able to identify hubs in graphs would be useful in real life problems but,
unfortunately, we will see the problem is NP-hard.
(1) Which of the following graphs contain a HU B for k =5

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