A set containing more than half elements of a group
58654
If $|A| > \frac{|G|}{2} $ then $AA = G $
3462
Proving a set of automorphisms of a group is a group under composition
146083
Stirling numbers of the second kind on Multiset
26398
Group of even order contains an element of order 2
103216
The set $\{g^2 | g \in G\}$ in a group $G$
132605
Finding the number of subsets of a set such that an element divides the succeeding element.
87830
Relating the union of the power set of a set to the set itself
57822
Number of ways to choose two disjoint subsets of a set
147484
For a set with N members, what is the number of set partitions in which each subset is either of size 1 or 2?
6679
Counting number of subsets which contain a specific element
15341
Non-abelian finite group in which more than half of the elements have order $2$
69827
Set conditions at a permutation
69748
Semi-Ambiguous Combinatorics Problem
147013
Subset of a finite set is finite
133762
A set which satisfies all conditions for a Group except associativity
4776
Prove that the power set of an $n$-element set contains $2^n$ elements
146664
The union of two linearly independent subsets