Q. a * H = H * a relation holds if (Solved)
1. h is semigroup of an abelian group
2. h is monoid of a group
3. h is a cyclic group
4. h is subgroup of an abelian group
- d. h is subgroup of an abelian group
1. h is semigroup of an abelian group
2. h is monoid of a group
3. h is a cyclic group
4. h is subgroup of an abelian group