My Math Forum sum containing binomial coefficients

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 October 4th, 2016, 08:52 AM #1 Senior Member   Joined: Jul 2011 Posts: 405 Thanks: 16 sum containing binomial coefficients Prove that prove that $\displaystyle\binom{2n}{n}>\frac{4n}{n+1}$ for all $n\geq 2$ Last edited by panky; October 4th, 2016 at 09:29 AM.
 October 4th, 2016, 06:33 PM #2 Senior Member   Joined: Feb 2016 From: Australia Posts: 1,834 Thanks: 650 Math Focus: Yet to find out. A proof of a proof eh.

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