International Competitions 1989

#CompetitionYearsProblemsYears
1International Mathematical Olympiad1959–2025398
2Middle European Mathematical Olympiad2009–2025160
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ProblemSourceTags
International Mathematical Olympiad 1989 Problem 1International Mathematical Olympiad 1989CombinatoricsConstructionSums
International Mathematical Olympiad 1989 Problem 2International Mathematical Olympiad 1989AnglesAreaCircumcircleGeometryTriangle
International Mathematical Olympiad 1989 Problem 3International Mathematical Olympiad 1989CollinearGeometryInequalitiesOptimization
International Mathematical Olympiad 1989 Problem 4International Mathematical Olympiad 1989GeometryInequalitiesOptimizationQuad
International Mathematical Olympiad 1989 Problem 5International Mathematical Olympiad 1989ConstructionNTPowersPrimes
International Mathematical Olympiad 1989 Problem 6International Mathematical Olympiad 1989CombinatoricsCountingPermutations