ProblemSourceTags
Middle European Mathematical Olympiad 2025 Problem I-3Middle European Mathematical Olympiad 2025CircleCircumcircleGeometryIncircleTriangle
Middle European Mathematical Olympiad 2025 Problem I-4Middle European Mathematical Olympiad 2025ConstructionNTOptimization
Middle European Mathematical Olympiad 2025 Problem T-1Middle European Mathematical Olympiad 2025CombinatoricsInequalitiesOptimization
Middle European Mathematical Olympiad 2025 Problem T-2Middle European Mathematical Olympiad 2025AlgebraFunctionalFunctions
Middle European Mathematical Olympiad 2025 Problem T-3Middle European Mathematical Olympiad 2025BoardCombinatoricsCountingOptimization
Middle European Mathematical Olympiad 2025 Problem T-4Middle European Mathematical Olympiad 2025CombinatoricsGraphsOptimization
Middle European Mathematical Olympiad 2025 Problem T-5Middle European Mathematical Olympiad 2025CircumcircleGeometryParallelogramTangentTriangle
Middle European Mathematical Olympiad 2025 Problem T-6Middle European Mathematical Olympiad 2025AnglesCircumcircleGeometryTriangle
Middle European Mathematical Olympiad 2025 Problem T-7Middle European Mathematical Olympiad 2025DivisibilityNT
Middle European Mathematical Olympiad 2025 Problem T-8Middle European Mathematical Olympiad 2025FunctionsNTPolynomials
Grade 9 1992 Problem 1Grade 9 1992AlgebraInequalitiesOptimization
Grade 9 1992 Problem 2Grade 9 1992AreaGeometryIncircleRight triangleTriangle
Grade 9 1992 Problem 3Grade 9 1992DiophantineNT
Grade 9 1992 Problem 4Grade 9 1992AbsAlgebraSystems
Grade 9 1993 Problem 1Grade 9 1993AreaCircleGeometry3D
Grade 9 1993 Problem 2Grade 9 1993DigitsNTPowers
Grade 9 1993 Problem 3Grade 9 1993GeometryOptimizationPolygon
Grade 9 1993 Problem 4Grade 9 1993NTRationalRadicals
Grade 9 1994 Problem 1Grade 9 1994AlgebraDiophantineEq
Grade 9 1994 Problem 2Grade 9 1994AreaGeometryTrapezoid
Grade 9 1994 Problem 3Grade 9 1994AlgebraSystems
Grade 9 1994 Problem 4Grade 9 1994AlgebraInequalities
Grade 9 1995 Problem 1Grade 9 1995CoordGeometryRight triangleSquare
Grade 9 1995 Problem 2Grade 9 1995AlgebraEqSums
Grade 9 1995 Problem 3Grade 9 1995AlgebraEqRadicals
Grade 9 1995 Problem 4Grade 9 1995DigitsDivisibilityNT
Grade 9 1996 Problem 1Grade 9 1996DivisibilityModNTPrimes
Grade 9 1996 Problem 2Grade 9 1996AlgebraInequalitiesSystems
Grade 9 1996 Problem 3Grade 9 1996CoordGeometryLengthsPolygon
Grade 9 1996 Problem 4Grade 9 1996AreaCircleGeometrySquare
Grade 9 1997 Problem 1Grade 9 1997AbsAlgebraEq
Grade 9 1997 Problem 2Grade 9 1997AlgebraInequalitiesOptimization
Grade 9 1997 Problem 3Grade 9 1997CircleGeometryTangent
Grade 9 1997 Problem 4Grade 9 1997BoardColoringCombinatoricsCounting
Grade 9 1998 Problem 1Grade 9 1998AlgebraInequalities
Grade 9 1998 Problem 2Grade 9 1998AlgebraDiophantineNT
Grade 9 1998 Problem 3Grade 9 1998AlgebraOptimization
Grade 9 1998 Problem 4Grade 9 1998AreaGeometryPolygon
Grade 9 1999 Problem 1Grade 9 1999CircleGeometryLengthsTangent
Grade 9 1999 Problem 2Grade 9 1999AlgebraInequalities
Grade 9 1999 Problem 3Grade 9 1999AbsAlgebraAreaCoord
Grade 9 1999 Problem 4Grade 9 1999AlgebraSystems
Grade 9 2000 Problem 1Grade 9 2000DiophantineNT
Grade 9 2000 Problem 2Grade 9 2000AnglesGeometryIncircleTriangle
Grade 9 2000 Problem 3Grade 9 2000CountingNT
Grade 9 2000 Problem 4Grade 9 2000CombinatoricsNT
Grade 9 2001 Problem 1Grade 9 2001EqNTPrimesQuadratics
Grade 9 2001 Problem 2Grade 9 2001CoordGeometryIncircleSquare
Grade 9 2001 Problem 3Grade 9 2001AlgebraInequalitiesRadicals
Grade 9 2001 Problem 4Grade 9 2001CombinatoricsTiling