Number Theory permutation
4592
Prison problem: locking or unlocking every $n$th door for $ n=1,2,3,...$
85023
Permutation of n objects with restriction of adjacent pairs
115934
What is the parity of permutation in the 15 puzzle?
107964
Simple combinatorics problem.
3632
Basic number theory proofs
75804
Is this permutation-sum problem NP-complete?
20722
Fixed points in random permutation
112188
Duplicate Permutations with Tuples
156247
Question about permutations and cycles (Groups and Symmetries)
35648
How many permutations of the set n={1,2,3,3,3,4,4,5} are possible without any consecutive identical elements?
61324
Finding the "square root" of a permutation
93459
Number of permutations of unspecified length
158708
Counting the adjacent swaps required to convert one permutation into another
133497
Group Membership Test for Permutations
83837
Odd/Even Permutations
48019
Explanation circular permutation
107110
Solving Rubik's cube and other permutation puzzles