Using correct mathematical notation and symbols, express the following in set-builder notation:

Question

Z = {16, 17, 18, 19, 20}

{x | 15 < x < 20, x ∈ N}

Answer 1

see your previous post about this.

Answer 2

{x | 16 ≤ x ≤ 20, x ∈ z} ??