Suppose Jim is going to build a playlist that contains 11 songs. In how many ways can Jim arrange the 11 songs on the playlist? Jim can arrange the 11 songs on the playlist in different ways.
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Once he's chosen the first song, he has 10 options left for the second song. For the third song, he has 9 options left, and so on. So, the total number of ways Jim can arrange the 11 songs is 11*10*9*8*7*6*5*4*3*2*1, which is 11 factorial, often written as 11!. Show more…
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