International Competitions 1998

#CompetitionYearsProblemsYears
1International Mathematical Olympiad1959–2025398
2Middle European Mathematical Olympiad2009–2025160
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ProblemSourceTags
International Mathematical Olympiad 1998 Problem 1International Mathematical Olympiad 1998AreaCyclic quadGeometryPerpendicularityQuad
International Mathematical Olympiad 1998 Problem 2International Mathematical Olympiad 1998CombinatoricsInequalitiesOptimization
International Mathematical Olympiad 1998 Problem 3International Mathematical Olympiad 1998DivisibilityNTPowers
International Mathematical Olympiad 1998 Problem 4International Mathematical Olympiad 1998DiophantineDivisibilityNT
International Mathematical Olympiad 1998 Problem 5International Mathematical Olympiad 1998AnglesGeometryIncircleTriangle
International Mathematical Olympiad 1998 Problem 6International Mathematical Olympiad 1998AlgebraFunctionalOptimization