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26-11-2017
Mathematics

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Nicole has been given a list of 5 bands and asked to place a vote. Her vote must have the names of her favorite and second bands from the list. How many different votes are possible?

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26-11-2017

[tex]\bf _nP_r=\cfrac{n!}{(n-r)!}\qquad \qquad _5P_2=\cfrac{5!}{(5-2)!}[/tex]

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