## RodrigoAbrao Group Title Power Series. Prove that sum (n/(n+1)!) = 1 2 years ago 2 years ago

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1. RodrigoAbrao

$\sum_{0}^{\infty} (n/(n+1)!)=1$

$\sum_{0}^{\infty}\frac{ n+1 }{ (n+1)! } -\sum_{0}^{\infty}\frac{ n }{ (n+1)! } = e - 1$