Problems

1 – 10 of 10

Problem Title Likes Solvers Difficulty

Problem 47838. Count the ways pairs of parentheses can be matched correctly

Created by: ChrisR

Tags combinatorics, parentheses, special numbers

Problem 1483. Number of paths on a grid

Created by: G K

Tags math, combinatorics, programming

Problem 1463. Pascal's Matrix

Created by: Yaroslav

Tags math, matlab 101, combinatorics

190

Problem 44066. Number of paths on a 3d grid

Created by: Jihye Sofia Seo

Tags math, combinatorics, programming

Problem 44072. Number of paths on a n-dimensional grid

Created by: Jihye Sofia Seo

Tags combinatorics, hypercube, grid

Problem 37. Pascal's Triangle

Created by: Cody Team

Tags math, combinatorics

3248

Problem 52629. Count the ways to draw non-intersecting chords between points on a circle

Created by: ChrisR

Tags combinatorics, geometry, sequence

Problem 52729. Easy Sequences 21: Combinatorial Summations

Created by: Ramon Villamangca

Tags easy, combinatorics, number theory

Problem 604. Next lexicographic - permutation

Created by: Muthu Annamalai

Tags combinatorics, permutations

Problem 44787. What can you get for exactly amount of money(harder)

Created by: li haitao

Tags combinatorics, search, knapsack problem

1 – 10 of 10

Trial software

Difficulty Rating

Problem Groups

Problems

Problem 47838. Count the ways pairs of parentheses can be matched correctly

Problem 1483. Number of paths on a grid

Problem 1463. Pascal's Matrix

Problem 44066. Number of paths on a 3d grid

Problem 44072. Number of paths on a n-dimensional grid

Problem 37. Pascal's Triangle

Problem 52629. Count the ways to draw non-intersecting chords between points on a circle

Problem 52729. Easy Sequences 21: Combinatorial Summations

Problem 604. Next lexicographic - permutation

Problem 44787. What can you get for exactly amount of money(harder)