1991 USAMO
Revision as of 22:34, 12 January 2008 by Boy Soprano II (talk | contribs) (New page: The '''20th USAMO''' occurred April 23, 1991. There were five problems, and the time limit was three and a half hours. * 1991 USAMO Problems * [[1991 USAMO Problems/Problem 1 | P...)
The 20th USAMO occurred April 23, 1991. There were five problems, and the time limit was three and a half hours.
Resources
| 1991 USAMO (Problems • Resources) | ||
| Preceded by 1990 USAMO |
Followed by 1992 USAMO | |
| 1 • 2 • 3 • 4 • 5 | ||
| All USAMO Problems and Solutions | ||
