1. Let the universal set be the set ℝ of all real numbers and define the sets

A = {x ℝ | 2 ≤x ≤ 2} and B = {x ℝ | 0 x 3}

(a) Find

(b) Find

2. Let A = {n | n r} for some integer r and

let B = {m |m = 2s} for some integer s

let C = {6, 12, 18,…}

Is A B or B A? Explain.

Explain why A C , but A C