2 If R = {(2, 4), (3, 6), (4, 8)}, what is the domain of R? A {2, 3, 4} B {4, 6, 8} C {2, 4, 6, 8} D {6, 8}
3 What is the identity element for intersection of sets? A Universal set B Empty set C The set itself D No identity
4 If A = {2, 4, 6, 8} and B = {4, 8, 12}, what is A ∪ B? A {2, 4, 6, 8, 12} B {4, 8} C {2, 6, 12} D {2, 4, 6, 8}
5 Which of the following is the identity element for union of sets? A Universal set B Empty set C The set itself D No identity exists
6 If R = {(x, y) | x ∈ {1, 2}, y ∈ {3, 4}} is a binary relation, which is a valid ordered pair in R? A (1, 3) B (3, 1) C (1, 1) D (3, 3)
7 The associative property for union of sets states that: A A ∪ B = B ∪ A B (A ∪ B) ∪ C = A ∪ (B ∪ C) C A ∪ (B ∩ C) = (A ∪ B) ∩ (A ∪ C) D A ∪ ∅ = A
8 What is the intersection of A = {x | x is even number less than 10} and B = {x | x is multiple of 3 less than 10}? A {2, 4, 6, 8} B {3, 6, 9} C {6} D {2, 3, 4, 6, 8, 9}
9 If A = {1, 3, 5, 7} and B = {1, 2, 3, 4}, what is A - B? A {5, 7} B {2, 4} C {1, 3} D {1, 2, 3, 4, 5, 7}
10 What is the complement of set A if A = {2, 4} and U = {1, 2, 3, 4, 5}? A {1, 3, 5} B {2, 4} C {1, 2, 3, 4, 5} D ∅