Finite group with unique subgroup of each order.
40513
A finite group which has a unique subgroup of order $d$ for each $d\mid n$.
114187
In a finite cyclic group, the generator has the order of the group
43750
Subgroups of finite solvable groups. Solvable?
142228
Proof that a subset closed under group operation of a finite group is a subgroup
80381
Groups with "few" subgroups
7973
Groups of order $pq$ have a proper normal subgroup
133770
Subgroups of finite abelian groups.
58694
Which non-abelian finite groups have the property that every subgroup is normal?
15526
Question on groups of order $pq$
121077
Product of all elements in finite group
76504
Non-trivial cyclic group with unique generator
5089
An element of a group has the same order as its inverse
64408
Subgroup of $\mathbb{Q}$ with finite index
88344
Order of a group and subsequent subgroups
131204
A non-trivial normal subgroup N of a finite group G or order $p^n$ is such that $N\cap Z(G)\neq \{ 1\}$
44152
If $G$ has only one subgroup of order $n$, then that Subgroup is Normal
155502
Index of a maximal subgroup in a finite group