How many elements does the following set have?
30601
Number of $60$th primitive roots of $-1$
43979
The total number of subsets is $2^n$ for $n$ elements
117658
A set with n elements has 2^n subsets
5230
Why can a 1 element set be a member of another set but not a subset of it?
85852
How many total order relations on a set $A$?
107010
How many elements of order $k$ are in $S_n$?
108275
How do I count the subsets of a set whose number of elements is divisible by 3? 4?
51770
Number of elements in a finite field extension for finite fields
130418
Is ${\{\emptyset,\{\emptyset\},\{\{\emptyset\}\},\{\{\{\emptyset\}\}\},...\}} $ a set?
36486
Finding the total number of set-bits from 1 to n
144821
Number of ordered pairs of subsets
155831
What are the total number of ordered permutations of a list of elements (possibly repeated)?
64658
How many associative binary operations for a set of two elements?
57221
counting the number of elements in a conjugacy class of $S_n$
130771
Sets and the principle of inclusion and exclusion
146083
Stirling numbers of the second kind on Multiset
73850
Cardinality of set of functions