International Competitions 1985

#CompetitionYearsProblemsYears
1International Mathematical Olympiad1959–2025398
2Middle European Mathematical Olympiad2009–2025160
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ProblemSourceTags
International Mathematical Olympiad 1985 Problem 1International Mathematical Olympiad 1985CircleCyclic quadGeometryTangent
International Mathematical Olympiad 1985 Problem 2International Mathematical Olympiad 1985ColoringCombinatoricsNTCoprime
International Mathematical Olympiad 1985 Problem 3International Mathematical Olympiad 1985AlgebraParityPolynomials
International Mathematical Olympiad 1985 Problem 4International Mathematical Olympiad 1985CombinatoricsNTPowersPrimes
International Mathematical Olympiad 1985 Problem 5International Mathematical Olympiad 1985AnglesCircleCircumcircleGeometryTriangle
International Mathematical Olympiad 1985 Problem 6International Mathematical Olympiad 1985AlgebraInequalitiesRecurrencesSeq