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The sum of degrees of a graph is ALWAYS even. In a simple, connected graph on 6 vertices, the degrees of 5 vertices are 1,

The sum of degrees of a graph is ALWAYS even. In a simple, connected graph on 6 vertices, the degrees of 5 vertices are 1, 2, 3, 4, 5 respectively. What is the degree of the 6th vertex? Draw the graph.

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