How many ways are there to pair-and specify the dancers

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Question: 1. Consider the previous problem, this time assuming that we specify which member of each couple leads first. How many ways are there to pair-and specify the dancers?

2. Figure shows a polyhedron with 60 vertices. (Note that at each vertex, two squares meet one triangle and one pentagon.) How many edges does it have? Explain, perhaps by over counting carefully.

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Reference no: EM131584878

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How many ways are there to pair-and specify the dancers : Consider the previous problem, this time assuming that we specify which member of each couple leads first. How many ways are there to pair-and specify.
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