Find the number of bicycles and tricycles
123851
Is there another simpler method to solve this elementary school math problem?
134599
How do I do Combinatorics / Counting?
37952
How to show the number of domains the disk is split into is $1+ C_n^2 + C_n^4$?
67343
How to count total items on the ground
119808
Proving that $n$-cycle has order $n$
123710
Find eight elements in $S_6$ that commute with $(12)(34)(56)$
16687
Number of Equivalence relations of $\{1,2,3\}$
2628
Counting number of moves on a grid
52348
Counting the number of surjections.
150536
Combinatorics, choosing 3 elements from 100
75461
If $n>m$, then the number of $m$-cycles in $S_n$ is given by $\frac{n(n-1)(n-2)\cdots(n-m+1)}{m}$.
17868
How to calculate the number of possible connected simple graphs with $n$ labelled vertices
35677
How to best determine if a bike will fit without riding it
68882
Path to Combinatorics Problem [$1.11$]
116251
Number of distinct total orders on a set
9411
Number of permutations of $n$ elements where no number $i$ is in position $i$
144079
Find Total number of ways out of N Number taking K numbers every M interval