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marks People Window Help Manifest l Xfinity S x: M Join Alpha Epsilon : × × Ψ webwork xl weewerk SPtH work.uits.iu.edu/webwork2/SP19-BL-MATH-D116-2936/Section 1.3 A/4/key-ynDW6CpaioxSb2UmzNpObmbi MATHEMATICAL ASSOCIATION OF AMERICA webwork / sp19-bl-math-d116-2936/section 1.3 a/4 Section 1.3 A: Problem 4 Previous ProblemProblem List Next Problem (1 point) Let U be a universal set with subsets A and B such that nU)121, A) 3,(B)64, and mAnB) 22. Find n(AUB) n(A u B) = Submit Answers Preview My Answers You have attempted this problem 4 times. Your overall recorded score is 0% You have unimited attempts remaining. Email instructor 名0 F3 9 6 5 4 3 2

Answer 1

$n(U)=121\\n(A')=53\\n(B')=64\\n(A\cap B)=22\\ n(A)+n(A')=121\\ n(A)=121-53=68\\ n(B)+n(B')=121\\ n(B)=121-64=57\\ n(A\cup B)=n(A)+n(B)-n(A\cap B)\\ =68+57-22=\boldsymbol{103}\\$