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1988 IMO Problems/Problem 4: Revision history

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30 January 2021

30 August 2008

  • curprev 10:5610:56, 30 August 2008 Cosinator talk contribs 2,849 bytes +2,849 New page: Show that the solution set of the inequality <math>\sum_{k=1}^{70}\frac{k}{x-k}\ge\frac{5}{4}</math> is a union of disjoint intervals, the sum of whose length is <math>1988</math>. Con...
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