Combinatory: how many differents queues are possible...
3077
How many ways can we let people into a movie theater if they only have half-dollars and dollars?
72052
Combinatorics the number of options for $k$ different balls in n different cells, with at least $1$ ball in each cell
64658
How many associative binary operations for a set of two elements?
56862
Concurrent and Blocking Queue in Java
13860
IMO/1981 - Combinatorics
626
Sum of combinations with varying $n$
140858
Number of ways to choose 6 objects when they are of 11 different kinds
69748
Semi-Ambiguous Combinatorics Problem
57954
How many transitive relations on a set of $n$ elements?
48305
Number of bins when computing mutual information
91351
the number of components working at a particular time
76405
Let n be an even integer. How many different ways can I choose subsets of the set {1,2...,n}
128124
Is it unlikely to get the same number of heads/tails?
102758
"Not only ... but also" —parallelism in a particular case
101012
Simulation of templates in C (for a queue data type)
129705
Is there a way to check how many messages are in a MSMQ Queue?
8458
Combinatorics problem based on Ferrers graph