# SOLUTION: I am confused on how to do this let U= {1,2,3,4,5,6,7,8} A= {1,2,4,5,8} B= {2,3,4,6} determine A'n B

Algebra ->  Algebra  -> Sequences-and-series -> SOLUTION: I am confused on how to do this let U= {1,2,3,4,5,6,7,8} A= {1,2,4,5,8} B= {2,3,4,6} determine A'n B      Log On

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 Question 480600: I am confused on how to do this let U= {1,2,3,4,5,6,7,8} A= {1,2,4,5,8} B= {2,3,4,6} determine A'n BAnswer by Theo(3458)   (Show Source): You can put this solution on YOUR website!i believe you are looking for A intersect B. this means the elements that are common to both set A and set B. since A = {1,2,4,5,8} and B = {2,3,4,6}, the elements that are in both A and B are {2,4} i just notice that you are talking about A' rather than A. A' is the elements that are not in A. that's a different story. we'll start again. your givens are: U= {1,2,3,4,5,6,7,8} A= {1,2,4,5,8} B= {2,3,4,6} all 3 of these sets are involved. the elements that are not in A would be the elements that are in U or in B, but not in A. since the elements that are in A are {1,2,4,5,8}, then the elements that are not in A would be {3,6,7} this makes a' = {3,6,7} now you want the intersection of the elements that are not in A that are also in B. look for any of {3,6,7} in B. you see that A'^B = {3,6} those are the elements that are not in A and that are also in B.