Question: Universal towns Question 3 Here's a complete directed graph on six vertices. B E I'm asking you to explore this question: by changing road directions
Universal towns

Question 3 Here's a complete directed graph on six vertices. B E I'm asking you to explore this question: by changing road directions on the graphs from Question 2, are you able to create new universal towns? Here's what to do: A. Compute which vertices are universal towns on the graph and explain. B. Choose one edge to flip on the graph, draw the new graph, and compute which vertices are universal towns. C. Choose one more edge to flip on the graph, draw this third graph, and compute which vertices are universal towns again. D. Did you get more or fewer as you flipped edges? And make a guess: do you think this happens all the time or not
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