In how many ways can the word "permutations" be arranged if there are 4 letters between p and s?
38809
In how many ways can the letters of word $PERMUTATIONS$ be arranged if there are always 4 letters between P and S?
77500
How to remove repeated permutations?
101719
Finding the n-th lexicographic permutation of a string
122389
How can I generate a list of all possible permutations of several letters?
107027
Number of combinations and permutations of letters
142477
Closed-form expression for the number of $k$-permutations of length $n$. Duplicates allowed!
69827
Set conditions at a permutation
98313
Number of possible permutations of n1 1's, n2 2's, n3 3's, n4 4's such that no two adjacent elements are same?
148703
Permutations with repeating digits
72990
Typesetting permutations with latex
131863
Permutation question on alphabets
65307
Simple combination/probability question based on string-length and possible-characters
140630
Permutations in JavaScript?
9349
In how many ways can the letters of the word CHROMATIC be arranged?
122504
Factorisations of permutations
25283
Intermediate Text in Combinatorics?
155831
What are the total number of ordered permutations of a list of elements (possibly repeated)?