The smallest number that if multiplied by 2 forms a permutation of itself
121042
Interview Question Asked In yahoo
144017
How to find the smallest $n$ such that $n^a\equiv 1 \pmod p$
108238
Find the smallest integer $n$ greater than $1$ such that the last $3$ digits of $n^2$ are the same as the last $3$ digits of $n$.
111966
The exact difference between a permutation and a substitution
114752
Number of permutations of a specific cycle decomposition
46999
How many fixed points in a permutation
137528
Get next smallest Double number
112599
What is the smallest value of n such that an algorithm running at 100*n^2 operates faster than 2^n ? [How to figure out without brute force]
41008
how many permutations of {1,2,...,9}
105452
permutation in c#
97254
What is the proof of permutations of similar objects?
147766
Sum of Permutations from 0 to n
19101
Permutation induced by a partition
26619
Permutations of word 'mathematics'
84491
Finding the smallest positive integer $n$ such that $S_n$ contains an element of order 60.
132298
How do you find the smallest of homeomorphic ordinals?
58673
Elements of order 5 in $S_7$, odd permutations of order 4 in $S_4$, and find a specific permutation in $S_7$