Set-builder notation is often more versatile and efficient than listing a set in roster fo...

Set-builder notation is often more versatile and efficient than listing a set in roster form. This versatility is illustrated with the following two sets.

A = {x | x ∈ N and x > 2 }

B = {x|x > 2}

a) Write a description of set A and set B.

---

b) Explain the difference between set A and set B. (Hint: Is ∈ A? Is  ∈ B?)

---

c) Write set A in roster form.

---

d) Can set B be written in roster form? Explain your answer.