Set Theory

Let the Universal Set, S, have 136 elements. A and B are subsets of S. Set A contains 34 elements and Set B contains 98 elements. If Sets A and B have 22 elements in common, how many elements are in A but not in B?

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  1. 34-22

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  2. If the universal set is given by S={11,22,33,44,55,66},and A={11,22}, B={22,44,55}, C={11,55,66} are three subsets, Find the following sets:
    a-(A∪B) ̅

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