1. What is the symbol used for intersection? A. U D. E . . 2. What is the complement of ? C.U A. { } . (1} D. {0} 3. What is the meaning of "the difference of P and Q"? A. The set of elements in P but not in Q. B. The set of elements is common to both P and Q. C. The set of elements in the universe that not in P and Q. D. The set of elements that is in P or Q or both P and Q. 4. What is the complement of {3, 4}, if U = {1,2, 3, 4}? C. {1} D. { 1, 2} A. { } . (0} 5. What is A u B, if A= {0, 2, 3, 4, 9, 11} andB = {2, 3, 6, 8, 9, 10}? A. {0, 4 11} B. {2, 3, 6, 9} %3D C. {6, 8, 9, 10, 11} D. {0, 2, 3, 4, 6, 8, 9, 10, 11 } 6. If P = {a, b, c, d, e}, Q = {a, c, e, d, t} and R = {t, d, c, b, e }, then what is Pn Qn R? A. {a, c} B. {a, c, e} C. {c, d} D. {c, d, e } 7. Given U = {a, d, c, r, f, v, t, w}, H= { a, d, c, v } and J = {r, c, f }, what is Hn J'? A. {c} B. {a, d, v} C. {a, d, v, t} D. {a, d, r, f, v, t} 8. What is (A U B) - C, if A = { 1, 2, 3, 4, 5, 6 }, B ={2, 4, 5, 6 } and C = {1, 2, 4, 6 }? A. { } . (2} C. { 3} D. { 3, 5 }