Showing posts with label universal. Show all posts
Showing posts with label universal. Show all posts

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