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1988 USAMO Problems/Problem 3: Revision history

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3 July 2013

15 May 2012

  • curprev 14:5814:58, 15 May 2012 1=2 talk contribs 479 bytes +479 Created page with "==Problem== Let <math>X</math> be the set <math>\{ 1, 2, \cdots , 20\}</math> and let <math>P</math> be the set of all 9-element subsets of <math>X</math>. Show that for any map ..."
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