MathForces: Math Olympiads
MathForces - Math Olympiadsβeta
Login Register

All problems with tag: Combinatorics



View all problems

Name сортировать Difficulty сортировать Users
Solved сортировать
Tags сортировать
Almost fixed 400 11 Combinatorics, Algebra
Rotating Hexagon 600 2 Geometry, Combinatorics
Sum of four 100 358 Combinatorics, Digits
Convex triangle 400 37 Geometry, Combinatorics
2020 Palindromes 100 330 Combinatorics, Palindromes
C Sum 300 104 Algebra, Combinatorics, Formulas
Infinite game 500 39 Combinatorics, Games
Friendly rooks 200 148 Combinatorics, Chess
Big set 400 15 Combinatorics
Monochromatics 400 5 Combinatorics, Graphs
Pencils 400 7 Combinatorics
Lin the Racoon's Debut 600 16 Combinatorics, Raccoon
Where is my husband 500 23 Combinatorics, True-False
Zeros and Ones 300 18 Combinatorics
Simple expression 300 78 Algebra, Combinatorics
Revolution 300 17 Combinatorics
Weird games 500 20 Combinatorics
Switchers 400 44 Combinatorics, Sets
Parking 300 183 Combinatorics
Circled 700 12 Geometry, Combinatorics
Equilateral Triangles 200 202 Combinatorics, Grids
More dominos 400 29 Combinatorics
Unfair Game 400 30 Combinatorics
Soccer Game 500 9 Combinatorics
Difference of squares 200 29 Combinatorics, Number-Theory
Probability computer 300 21 Combinatorics
Math lesson 400 39 Number-Theory, Combinatorics
Divisible sets 300 5 Combinatorics
Independence 300 10 Combinatorics, Probabilities
Subsets Collection 600 25 Combinatorics, Sets
Random numbers 400 14 Algebra, Combinatorics
Rooks 600 14 Combinatorics
0,1,2 polynomial 400 20 Combinatorics, Algebra
Lin's Game 400 9 Combinatorics, Games
Flights 500 9 Combinatorics, Graphs
Fill the square 400 16 Combinatorics, Algebra
Sum probability 300 75 Combinatorics, Algebra, Probablilities
Air MF 500 6 Combinatorics
Prime Sets 500 8 Combinatorics, Number-Theory
Bingo! 200 142 Combinatorics, Probabilities
Factorial Factor 200 55 Number-Theory, Combinatorics
Magic Ruler 500 6 Geometry, Combinatorics
Again these rooks 600 57 Combinatorics, Boards
!Fancy sequence 600 8 Combinatorics, Number-Theory
Friendly Team 400 11 Combinatorics
Teleporting button 300 10 Combinatorics, Probabilities
Reverse Product 400 35 Combinatorics, Number-Theory
Obtuser 400 18 Combinatorics, Geometry
!Fancy grid 700 9 Combinatorics, Graphs
Bools and cows 200 154 Random, Combinatorics
Number Coloring 400 21 Combinatorics
MathForces Store 500 32 Combinatorics
Total inversion 500 31 Combinatorics, Geometry
Checkboard 600 3 Combinatorics
Lin's Octagon 300 43 Combinatorics
Ordered papers 300 32 Combinatorics
Love Triangle 400 5 Combinatorics
Pentagon 500 17 Geometry, Combinatorics, Pentagons
Novirus 300 80 Combinatorics, Graphs
Friends Playing 600 17 Combinatorics
Half of Octahedron 400 123 Combinatorics, Graphs
Quadratic Sets 400 7 Combinatorics, Sets, Algebra
Regular Polygons 200 46 Geometry, Combinatorics
These Triangles 300 14 Geometry, Combinatorics
School Clubs 500 3 Combinatorics
Half Integers 500 2 Combinatorics, Geometry
Lin Jumper 500 15 Combinatorics
Money date 100 291 Combinatorics, Probabilities