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Negative binomial coefficients

Discrete Mathematics Level 1

Let \(n \) be a positive integer. Then \(\binom{-n}{n} = \text{__________}. \)

\[n!\] \[ \binom{2n}{n} \] \[-1\] \[ (-1)^n \binom{2n-1}{n} \]

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by Patrick Corn

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