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In the graph below we have 10 vertices and 12 edges. Assume that length of all edges are the same and equal, for instance,

In the graph below we have 10 vertices and 12 edges. Assume that length of all edges are the same and equal, for instance, 1 sm. Find the NUMBER of ALL spanning trees. Prove (or at least explain) you answer. No explanation no points. No partial points to this task: Zero or (exclusive or) Three points.

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