June 2023 1 76 Report
(Análise Combinatória: Combinação – Coeficiente Binomial)

Verifique a identidade

     [tex]\dfrac{1}{k}\dbinom{n-1}{k-1}=\dfrac{1}{n}\dbinom{n}{k}[/tex]

dados n, k naturais e [tex]1\le k\le n.[/tex]​
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