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Help please!

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732

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+379

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sinclairdragon428 Oct 20, 2019

edited by sinclairdragon428 Nov 20, 2019

1⁺⁰ Answers

+118703

+1

\frac{(N-1)!(N)}{(N+1)!}.

$\frac{(N-1)!(N)}{(N+1)!}\\ =\frac{(N-1)!(N)}{(N-1)!N(N+1)}\\ =\frac{1}{N+1}$

Melody Oct 20, 2019

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