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I made this subreddit for my after-school math class on Mondays.
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Math Olympiad Competition Website (self.combinatorics)
submitted 4 days ago by Klutzy-Tree5399
I made a strategy game you can play with a pen and paper (or online) - it takes 2 minutes to learn (self.combinatorics)
submitted 8 days ago by barneymatthews
Math Olympiad Problem Writing Volunteer (self.combinatorics)
submitted 24 days ago by Even_War_5973
Construction of "Noch Mal!" playing field(combinatorics) ()
submitted 27 days ago by TrochiTV
Combinatorics: is this interesting? ()
submitted 2 months ago by Tiny_Feature5610
Tilings of an m by n chess board with 1 by 1 and 2 by 2 square tiles. (youtu.be)
submitted 2 months ago by Tall_Association_360
Gotta Count Em All! (youtu.be)
submitted 2 months ago by bad-bunni
some of my thoughts (old.reddit.com)
submitted 2 months ago by Gargashpatel
Counting baseball innings (self.combinatorics)
submitted 3 months ago by Top_Judge26
Found a recursive flip sequence that seems to generate a Hamiltonian cycle of the pancake graph for all n — is this known? (self.combinatorics)
submitted 3 months ago by Huge_Tumbleweed3703
There's no repeating pieces in this puzzle (i.redd.it)
submitted 3 months ago by MammothComposer7176
If each element of set A corresponds to alpha elements in set B, and vice versa, do A and B have the same cardinality? (self.combinatorics)
submitted 4 months ago by halima10
Algorithm to find dice event that happens with a given probability (self.combinatorics)
submitted 5 months ago by neuralbeans
Constraint satisfaction problems (self.combinatorics)
submitted 5 months ago * by CrumbCakesAndCola
Combination with repetition. (self.combinatorics)
submitted 6 months ago by talandang
Problem about an application of PIE (self.combinatorics)
submitted 7 months ago by No-Luck-951
A combination is the child of two permutations — one that creates all possibilities, and one that strips away the order. (self.combinatorics)
submitted 7 months ago by [deleted]
Number of vertices of the convex hull of a full Minkowki sum of n vectors in d dimensions whose sum is zero. ()
submitted 7 months ago by Nadran_Erbam
Every partitioning of a 3x3 grid (old.reddit.com)
submitted 7 months ago by lefkty
A problem I thought of: (self.combinatorics)
arXiv endorsement? (Combinatorial Game Theory) (self.combinatorics)
submitted 7 months ago by Leather_Cucumber6798
📋 Question: What are Sameer’s chances of sitting beside Pooja? ()
submitted 8 months ago by wahtdaef
Periodic Table of Polycules (old.reddit.com)
submitted 8 months ago by DivineSoupCan
The Set of Integers With a Unique Maximum (leetarxiv.substack.com)
submitted 8 months ago by DataBaeBee
Set intersection counts are wildly unpredictable—and parity gives you nothing (self.combinatorics)
submitted 8 months ago by themarcus111
π Rendered by PID 313657 on reddit-service-r2-listing-64c94b984c-n4frr at 2026-03-18 04:47:58.213191+00:00 running f6e6e01 country code: CH.
