How many arrangements of GRACEFUL...
61736
Combinations word "GRACEFUL" question
73323
Permutations when some objects are alike
65629
How many squares actually ARE in this picture? Is this a trick question with no right answer?
140112
How many number of functions are there?
46469
$n$ Lines in the Plane
74114
How to find the number of anti-symmetric relations?
157985
Trying to understand formula for counting regions of hyperplane arrangements in $\mathbb{R}^2$
41008
how many permutations of {1,2,...,9}
9411
Number of permutations of $n$ elements where no number $i$ is in position $i$
107010
How many elements of order $k$ are in $S_n$?
74015
Number of relations that are both symmetric and reflexive
93459
Number of permutations of unspecified length
82207
Number of Pairs of Subsets
114752
Number of permutations of a specific cycle decomposition
7148
Towers of Hanoi - are there configurations of $n$ disks that are more than $2^n - 1$ moves apart?
45111
Number of Subspaces that contains other Space
26343
Number of certain (0,1)-matrices, Stanley's Enumerative Combinatorics