Croatian National Competitions 2021

#CompetitionYearsProblemsYears
1Grade 91992–2026159
2Grade 101992–2026159
3Grade 111992–2026158
4Grade 121992–2026159

Documents

YearFilenameLanguageSource
2021drzavno_ssA_2021.pdfhrhttps://natjecanja.math.hr/domaca-natjecanja/domaca-natjecanja-arhiva/
❏▤
ProblemSourceTags
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