CMR
$\frac{(a_{1}a_{2}...a_{n})(1-(a_{1}+a_{2}+...+a_{n}))}{(a_{1}+a_{2}+...+a_{n})(1-a_{1})(1-a_{2})...(1-a_{n})}\leq \frac{1}{n^{n+1}}$
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Edited by WhjteShadow, 11-11-2012 - 07:44.
Edited by WhjteShadow, 11-11-2012 - 07:44.
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