Let A = {2, 4, 6, 8}, B = {6, 8, 10, 12} and C = {7, 8, 9, 10}. Find :

(i) A ∪ B

(ii) A ∪ C

(iii) B ∪ C

(iv) A ∩ B

(v) A ∩ C

(vi) B ∩ C

Let P = {x : x is a factor of 18} and Q = {x : x is a factor of 24}.

(i) Write each one of P and Q in Roster form.

(ii) Find:

(a) P ∪ Q

(b) P ∩ Q

Let A = {x : x is a multiple of 2, x < 15}, B = {x : x is a multiple of 3, x < 20}, C = {x : x is a prime, x < 20}.

(i) Write each one of the sets A, B, C in Roster form.

(ii) Find:

(a) A ∪ B

(b) A ∪ C

(c) B ∪ C

(d) A ∩ B

(e) A ∩ C

(f) B ∩ C

Let A = {b, d, e, f}, B = {c, d, g, h} and C = {e, f, g, h}. Find :

(i) A - B

(ii) B - C

(iii) C - A

(iv) (A - B) ∪ (B - A)

(v) (B - C) ∪ (C - B)