Revision history of "1991 IMO Problems"

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  • (cur | prev) 16:35, 30 January 2021Hamstpan38825 (talk | contribs). . (2,733 bytes) (+2,733). . (Created page with "Problems of the 1991 IMO. ==Day I== ===Problem 1=== Given a triangle <math> \,ABC,\,</math> let <math> \,I\,</math> be the center of its inscribed circle. The internal bi...")