1. Which one of the following pairs of sets is equal? A = {1, 2, 3} B = {a, b, c} A = {3, 5, 7} B = {9, 11, 13} A = {0, 1, 2, 3} n(A) = 4 A = {0, 1, 2, 3} |A| = 4 A = {1, 2, 3} B = {3, 1, 2} 2. What is the correct way of denoting (or writing) the cardinality of set Q? Q = {orange, green, pink, red, black} None of these. c(Q) = 5 n|Q|=5 |Q| = 5 Q = 5 3. Which one is the correct denotation of an empty set? E = {0} n(E) = 1 E = { } E = {none} |E| = 1 4. Which one of the following pairs of sets is equivalent? M = {one, two, three} N = {1, 2, 3, 4} M = {red, green, brown, blue} N = {5, 6, 7, 8} M = { } N = {1, 2, 3, 4} M = {orange, red, green, blue} N = {1, 2, 3} |M| = 3 N = {1, 2, 3, 4} 5. Which of the following is not a finite set? A = {-2, -3, -1} A = {red, white, blue} A = { } A = The set of all real numbers A = {1, 2, 3}