Problem 1191
The symmetric difference of two sets A and B is all elements in the union of the two sets that are not in the intersection. The power set of a set A is the set of all subsets of A including the empty set and the whole set. How many elements are in the power set of the symmetric difference of A and B when A = {1,2,3,4,5,6,7,8,9,10} and B = {2,4,6,8}.
Problem submitted by Pat Costello, Eastern Kentucky University
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