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How to prove (n!)^(-1/n) is null sequence?

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    Note that n/2, n/2+1,..., n are all >= n/2.
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    (Original post by DFranklin)
    Note that n/2, n/2+1,..., n are all >= n/2.
    I tried this with sandwich rule. But it only lead me between 0 and 1
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    Try harder.
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    (Original post by DFranklin)
    Try harder.
    Thank u. I did it wrong at the beginning.

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