Counting certain permutations
43962
Penguin Brainteaser : 321-avoiding permutations
127069
Discrete Math - Counting
35648
How many permutations of the set n={1,2,3,3,3,4,4,5} are possible without any consecutive identical elements?
123567
Number of permutations which are products of exactly two disjoint cycles.
53312
Multiplication principle and permutation
61324
Finding the "square root" of a permutation
38809
In how many ways can the letters of word $PERMUTATIONS$ be arranged if there are always 4 letters between P and S?
19101
Permutation induced by a partition
77500
How to remove repeated permutations?
98744
How to distinguish between permutation and combination questions?
140630
Permutations in JavaScript?
101719
Finding the n-th lexicographic permutation of a string
105452
permutation in c#
26619
Permutations of word 'mathematics'
56135
Find all permutations with a condition
130614
Permutations on word $MISSISSIPPI$.
112188
Duplicate Permutations with Tuples