Combinatorics/Permutations
132034
Is it theoretically possible that every person in this village has a different jar of coins?
5801
Combinatorial proof help
6204
How many permutations of $\{1, \ldots, n\}$ exist such that none of them contain $(i, i+1)$ (as a sequence) for $i \in {1,...,(n-1)}$?
142477
Closed-form expression for the number of $k$-permutations of length $n$. Duplicates allowed!
140416
Catalan number - combinatoric
39872
Good Book On Combinatorics
156247
Question about permutations and cycles (Groups and Symmetries)
142978
combinatorics: sum of product of integer compositions
23322
Combinatorics Inclusion - Exclusion Principle
134440
An unexpected application of non-trivial combinatorics
26619
Permutations of word 'mathematics'
82872
Combinatorial proof involving partitions and generating functions
25283
Intermediate Text in Combinatorics?
107964
Simple combinatorics problem.
57986
Sum of products of combinatorials
41008
how many permutations of {1,2,...,9}
69748
Semi-Ambiguous Combinatorics Problem