1) A = {1, 2, 3} is 4 an element of the set??? a) YESSIR b) NAWHH 2) A singleton set is a set comprised of only one element. Which sets below are singleton sets? a) A = {a, e, i ,o, u} b) B = {j} c) C = {9} d) D = {1, 2, 4, 5, 10} 3) What is the symbol for 'Union' in set notation? a) ∅ b) ∪ c) ∈ d) ∩ 4) Is set G = (5, 10, 15, 20) correct? a) Yes b) Nay. 5) Is set T = {a, i} a proper subset of set U = {s, a, i, l} a) Yes b) NO 6) What is a set in mathematics? a) McDonalds hamburger set b) A collection of elements 7) List the elements of the set A = {x | x is an even number less than 10} a) {2, 4, 6, 8} b) {0, 2, 4, 6, 8} 8) If A = {1, 2, 3} and B = {3, 4, 5}, what is A ∩ B (the intersection of A and B)? a) 3 b) {1, 2, 3, 4, 5} 9) Find the union of sets A = {apple, banana} and B = {banana, cherry}. a) banana b) baanana 10) Is the empty set a subset of every set? a) YES b) NO 11) What is the cardinality (number of elements) of the set S = {5, 10, 15, 20}? a) 41 b) 四 12) If U = {1, 2, 3, 4, 5} and A = {2, 3}, what is the complement of A in U? a) {1, 4, 5} b) (1, 4, 5) 13) Is the set {a, b, c} equal to the set {c, b, a}? Why or why not? a) Yessir b) Nodud 14) Let A = {2, 4, 6, 8} and B = {4, 8, 10}. What is A ∩ B? a) {4, 8} b) {8, 4,} 15) If D = {x | x is a multiple of 3 less than 15}, list the elements of D. a) {3, 6, 9, 12} b) {2, 3, 6, 9, 12} 16) Let U = {1, 2, 3, 4, 5, 6}, and C = {2, 4, 6}. What is the complement of C in U? a) {2, 4, 6} b) [2, 4, 6] 17) IS {6} A SET??? a) YEASSS b) NAHHHH 18) WAHT SUYMBOL SHOWS "IS AN ELEMENT OF???" a) ∈ b) 我叫BHISMA 19) Is the number 7 in the set {1, 3, 5, 7, 9}? a) YEAS b) NAWHH 20) WHWAT DO WE CALL AN EMPTY SET??? a) NOLI / NULL. b) ∅ or {} 21) what answer is completely identical to this code: awg#IrngpE a) awg#lmgpE b) awg#lrngpE c) awg#lrngp3 d) awg#ImgpE e) awg#IrngpE f) awg#Irngp3

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