Rotman's Intro to the Theory of Groups exercise 2.20
106653
How many generator has a cyclic group of order n?
102429
There are 2 groups of order 6 (up to isomorphism)
68955
Characterising subgroups of Prüfer $p$-groups.
124224
How many groups of order $n$ with center {e} exist?
85222
Direct sum of finitely-many non-abelian groups
933
How many groups exist with order $n$ (two isomorphic groups are treated as the same group)
51352
Subgroups of a finite abelian group
23279
Group Theory Isomorphism
110708
On proving that a finitely generated group has a finite number of subgroups with index $n$.
85299
computing the orbits for a group action
16476
Order of the product of two commuting elements with coprime orders in a group.
68422
Understanding Lagrange's Theorem (Group Theory)
54082
Group with exactly two subgroups of index 2
87766
Using Cayley's Theorem to find an isomorphic subgroup.
41688
An elementary problem in Group Theory: the unique noncyclic group of order 4
144211
a second course in abstract algebra
94095
Simple applications of group theory which can be understood by a senior undergrad