Total number of ways to arrange objects subject to constraint
113430
Probability no one needs to wait for changes when buying tickets .
54719
How to handle equality constraints in this problem?
113953
Circular permutations with indistinguishable objects
45567
Alignment of different-sized objects in Row
13494
Features and Patterns for Managing Ordered Lists
4555
How to write permutations as product of disjoint cycles and transpositions
158708
Counting the adjacent swaps required to convert one permutation into another
97908
Finding the no. of possible matrices given the order and limited no. of entries
155831
What are the total number of ordered permutations of a list of elements (possibly repeated)?
97254
What is the proof of permutations of similar objects?
135408
Solving permutation problem sequentially.
120962
How to arrange many  elements side by side with no wrap
68882
Path to Combinatorics Problem [$1.11$]
35362
Number of equivalence relations on a set
46999
How many fixed points in a permutation
138684
How many objects are being created?
24146
Number of ways to partition a rectangle into n sub-rectangles