Local Competitions 2021

#CompetitionYearsProblemsYears
Croatian Competitions
1Croatian Mathematical Olympiad2010–2025252
Croatian National Competitions
2Grade 91992–2026159
3Grade 101992–2026159
4Grade 111992–2026158
5Grade 121992–2026159
Croatian County-Level Competitions
6Grade 92015–202660
7Grade 102015–202660
8Grade 112015–202660
9Grade 122015–202660
Croatian School-Level Competitions
10Grade 92020–202649
11Grade 102020–202649
12Grade 112020–202649
13Grade 122020–202649
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ProblemSourceTags
Croatian Mathematical Olympiad 2021 Problem 1-1Croatian Mathematical Olympiad 2021AlgebraInequalities
Croatian Mathematical Olympiad 2021 Problem 1-2Croatian Mathematical Olympiad 2021BoardCombinatoricsParity
Croatian Mathematical Olympiad 2021 Problem 1-3Croatian Mathematical Olympiad 2021CircleGeometryQuadTangent
Croatian Mathematical Olympiad 2021 Problem 1-4Croatian Mathematical Olympiad 2021GraphsModNTPrimes
Croatian Mathematical Olympiad 2021 Problem 2-1Croatian Mathematical Olympiad 2021AlgebraFunctionalPolynomials
Croatian Mathematical Olympiad 2021 Problem 2-2Croatian Mathematical Olympiad 2021ColoringCombinatoricsPolygon
Croatian Mathematical Olympiad 2021 Problem 2-3Croatian Mathematical Olympiad 2021CircleCollinearGeometryPerpendicularityTriangle
Croatian Mathematical Olympiad 2021 Problem 2-4Croatian Mathematical Olympiad 2021DiophantineNTPowers
Croatian Mathematical Olympiad 2021 Problem I-1Croatian Mathematical Olympiad 2021AlgebraFunctional
Croatian Mathematical Olympiad 2021 Problem I-2Croatian Mathematical Olympiad 2021CombinatoricsOptimizationTables
Croatian Mathematical Olympiad 2021 Problem I-3Croatian Mathematical Olympiad 2021CircleConcyclicGeometryQuad
Croatian Mathematical Olympiad 2021 Problem I-4Croatian Mathematical Olympiad 2021NTPrimesSeq
Croatian Mathematical Olympiad 2021 Problem M-1Croatian Mathematical Olympiad 2021AlgebraEqFunctions
Croatian Mathematical Olympiad 2021 Problem M-2Croatian Mathematical Olympiad 2021CombinatoricsCountingPermutations
Croatian Mathematical Olympiad 2021 Problem M-3Croatian Mathematical Olympiad 2021CircleGeometryQuadSimilarity
Croatian Mathematical Olympiad 2021 Problem M-4Croatian Mathematical Olympiad 2021DivisibilityNT
Grade 9 2021 Problem 1Grade 9 2021AlgebraSystems
Grade 9 2021 Problem 2Grade 9 2021DiophantineModNT
Grade 9 2021 Problem 3Grade 9 2021AnglesGeometryTrapezoid
Grade 9 2021 Problem 4Grade 9 2021AbsAlgebraInequalitiesOptimization
Grade 9 2021 Problem 5Grade 9 2021CombinatoricsCounting
Grade 10 2021 Problem 1Grade 10 2021AlgebraSystems
Grade 10 2021 Problem 2Grade 10 2021InequalitiesNTRight triangle
Grade 10 2021 Problem 3Grade 10 2021AreaCircumcircleGeometryTangentTriangle
Grade 10 2021 Problem 4Grade 10 2021DiophantineNT
Grade 10 2021 Problem 5Grade 10 2021Combinatorics
Grade 11 2021 Problem 1Grade 11 2021DivisibilityNT
Grade 11 2021 Problem 2Grade 11 2021AlgebraTrigonometry
Grade 11 2021 Problem 3Grade 11 2021CircumcircleGeometryPerpendicularitySquare
Grade 11 2021 Problem 4Grade 11 2021AlgebraSeq
Grade 11 2021 Problem 5Grade 11 2021GeometryTriangle
Grade 12 2021 Problem 1Grade 12 2021AlgebraRecurrencesSeq
Grade 12 2021 Problem 2Grade 12 2021AlgebraInequalitiesPermutations
Grade 12 2021 Problem 3Grade 12 2021DiophantineNT
Grade 12 2021 Problem 4Grade 12 2021BoardCombinatoricsCountingTiling
Grade 12 2021 Problem 5Grade 12 2021AnglesCircumcircleGeometryIncircleTriangle
Grade 9 2021 Problem 1Grade 9 2021AlgebraDiophantineEq
Grade 9 2021 Problem 2Grade 9 2021AlgebraOptimizationSystems
Grade 9 2021 Problem 3Grade 9 2021AlgebraSystems
Grade 9 2021 Problem 4Grade 9 2021AnglesGeometryTriangle
Grade 9 2021 Problem 5Grade 9 2021CombinatoricsCubeOptimization
Grade 10 2021 Problem 1Grade 10 2021AlgebraSystems
Grade 10 2021 Problem 2Grade 10 2021NTPrimes
Grade 10 2021 Problem 3Grade 10 2021AlgebraFunctionsOptimizationQuadratics
Grade 10 2021 Problem 4Grade 10 2021CircleCircumcircleGeometryIncircleTriangle
Grade 10 2021 Problem 5Grade 10 2021ColoringCombinatoricsPolygon
Grade 11 2021 Problem 1Grade 11 2021GeometryOrthocenterTriangleTrigonometry
Grade 11 2021 Problem 2Grade 11 2021AlgebraEqExp
Grade 11 2021 Problem 3Grade 11 2021CircleCircumcircleGeometryIncircleTriangle
Grade 11 2021 Problem 4Grade 11 2021NTPowers