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Exam #2 SET THEORY MATH 105 Name_______________________________________________ Section __________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. List the elements in the set. 1) {x | x is a counting number multiple of 2} A) B) {4, 6, 8, …} 2) { x C) {2, 4, 6, …} x is an even integer smaller than 8} A) {…, -6, -4, -2, 0, 2, 4, 6} C) {0, 2, 4, 6} B) {x | x is an integer between 16 and 21} D) {17, 18, 19, 20} 4) {9, 12, 15, 18, …, 39} A) {x | x is a multiple of 3} C) {x | x is a multiple of 3 between 6 and 42} B) {x | x is a multiple of 3 greater than 9} D) {x | x is a multiple of 3 between 9 and 39} Find n(A) for the set. 5) A = {x | x is a number on a clock face} A) n(A) = 12 B) n(A) = 3 B) n(A) = 10 1) 2) B) {…, -6, -4, -2, 2, 4, 6} D) {2, 4, 6} Write the set in set-builder notation.

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