Number of elements in a subset of $\mathbb F_{27}$
115016
Prove that the number of $\alpha\in\mathbb{F}_{27}$ such that $|A_\alpha|=26 $ equals 12.
140087
The number of divisors
86263
How do we show there are the same number of elements in each of the sets?
8494
Proof Check: Number of elements of $\mathbb{F}_{p^{n}}$ of the form $a^{p}-a$ for some $a \in \mathbb{F}_{p^{n}}$.
69833
Number of elements not equal to their inverses is even number
73850
Cardinality of set of functions
88628
Proving the total number of subsets of S is equal to $2^n$
132605
Finding the number of subsets of a set such that an element divides the succeeding element.
141379
All groups where underlying set has at most 4 elements
111954
Computing the cardinality of a combinatorial set
9651
Cardinality of cartesian product of an infinite set with N
6432
How many ways can N elements be partitioned into subsets of size K?
146436
Cardinality of the set of bijective functions on $\mathbb{N}$?
97878
Are there uncountably many surjections from $\mathbb N$ to $\mathbb N$?
149578
Subgroups of $(\mathbb Z_n,+)$
45947
Find generator of multiplicative group of $\mathbb{F}_{27}$
65978
How many subsets does the set $\{1, 2, \dots , n\}$ have that contain no two consecutive integers if $1$ and $n$ also count as consecutive?