THE CORRECT ANSWER IS (D).R {1,3,5,…17,19}S {3,6,9,12,…15,18}R + S...
47. The correct answer is (D).
R {1,3,5,…17,19}
S {3,6,9,12,…15,18}R + S = {3,9,15} 3 elements47. The correct answer is (D).
R {1,3,5,…17,19}
S {3,6,9,12,…15,18}R + S = {3,9,15} 3 elements