Q1.
(c) Let G be a group and let H be a subgroup of G. Prove that if G is cyclic, then G/H is also cyclic.
(d) Let R be a commutative ring with unity. Show that an ideal I of R is a prime ideal if and only if for any a, b ∈ R, ab ∈ I implies a ∈ I or b ∈ I.
(e) Let F be a field. Show that the set of all polynomials in one variable over F, denoted by F[x], forms a Euclidean domain.