International Competitions 2009

#	Competition	Years	Problems	Years
1	International Mathematical Olympiad	1959–2025	398
2	Middle European Mathematical Olympiad	2009–2025	160

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Problem	Source	Tags
International Mathematical Olympiad 2009 Problem 1	International Mathematical Olympiad 2009	Divisibility Mod NT
International Mathematical Olympiad 2009 Problem 2	International Mathematical Olympiad 2009	Circle Circumcircle Geometry Tangent Triangle
International Mathematical Olympiad 2009 Problem 3	International Mathematical Olympiad 2009	Algebra Recurrences Seq
International Mathematical Olympiad 2009 Problem 4	International Mathematical Olympiad 2009	Angles Geometry Incircle Isosceles Triangle
International Mathematical Olympiad 2009 Problem 5	International Mathematical Olympiad 2009	Algebra Functional Inequalities Triangle
International Mathematical Olympiad 2009 Problem 6	International Mathematical Olympiad 2009	Combinatorics Construction Permutations
Middle European Mathematical Olympiad 2009 Problem I-1	Middle European Mathematical Olympiad 2009	Algebra Functional
Middle European Mathematical Olympiad 2009 Problem I-2	Middle European Mathematical Olympiad 2009	Coloring Combinatorics Geometry Optimization Polygon
Middle European Mathematical Olympiad 2009 Problem I-3	Middle European Mathematical Olympiad 2009	Angles Geometry Quad
Middle European Mathematical Olympiad 2009 Problem I-4	Middle European Mathematical Olympiad 2009	Divisibility NT Powers
Middle European Mathematical Olympiad 2009 Problem T-1	Middle European Mathematical Olympiad 2009	Algebra Inequalities Optimization
Middle European Mathematical Olympiad 2009 Problem T-2	Middle European Mathematical Olympiad 2009	Algebra Quadratics Systems
Middle European Mathematical Olympiad 2009 Problem T-3	Middle European Mathematical Olympiad 2009	Combinatorics Games Optimization
Middle European Mathematical Olympiad 2009 Problem T-4	Middle European Mathematical Olympiad 2009	Board Coloring Combinatorics
Middle European Mathematical Olympiad 2009 Problem T-5	Middle European Mathematical Olympiad 2009	Circle Circumcircle Geometry Parallelogram
Middle European Mathematical Olympiad 2009 Problem T-6	Middle European Mathematical Olympiad 2009	Angles Cyclic quad Geometry
Middle European Mathematical Olympiad 2009 Problem T-7	Middle European Mathematical Olympiad 2009	Algebra Diophantine NT
Middle European Mathematical Olympiad 2009 Problem T-8	Middle European Mathematical Olympiad 2009	Diophantine Exp NT