I am learning how to find the limit of a sequence and this is the problem. (n!)/(n^n). So the first step is to expand the numerator, and in the video the numerator expands as follows: (n) (n-1) (n-2) .....(2)(1). I and confused about how the person carried out the expansion. how do they get (2) (1) as the last terms? and if I did the expansion, wouldn't it just continue to (n-1)(n-2)(n-3) (n-4)?

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hmm....n! means 2*3*4*.....*(n-2)*(n-1)*(n) right?

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