31st IMO 1990

General information
Beijing, People's Republic of China (8.7. - 19.7.)
Number of participating countries: 54.
Number of contestants: 308 ; 12.
Awards
Maximum possible points per contestant: 7+7+7+7+7+7=42.
Gold medals: 23 (score ≥ 34 points) .
Silver medals: 56 (score ≥ 23 points) .
Bronze medals: 76 (score ≥ 16 points) .
Honourable mentions: 32.
IMO board