Raymond B. answered • 05/21/21
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Math, microeconomics or criminal justice
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4 elements in A, 3 in not A, 7 all together, 3+4 = 7
Brandon K.
asked • 05/21/21How many elements are in A' ?
U = {1, 2, 3, 4, 5, 6, 7}
A = {1, 2, 4, 5}
B = {1, 3, 5, 7}
How many elements are in A' ?
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