1991 USAMO

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The 20th USAMO occurred April 23, 1991. There were five problems, and the time limit was three and a half hours. The first link contains the full set of test problems. The rest contain each individual problem and its solution.

See Also

1991 USAMO (ProblemsResources)
Preceded by
1990 USAMO
Followed by
1992 USAMO
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All USAMO Problems and Solutions