- #1

Avatrin

- 245

- 6

Showing a subgroup is or is not normal (usually worse in the case of symmetric groups)

Finding a subgroup of order n.

Showing that there is no subgroup of order n.

I cannot remember encountering many exercises that helped me learn to work with subgroups of symmetric and dihedral groups. Are there any strategies I can follow, and, even better, any sets of exercises anybody here recommends?