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OpenStudy (igreenhacked):
Find A ∩ B if A = {3, 6, 9, 12} and B = {2, 4, 6, 8, 10, 12}.
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OpenStudy (michele_laino):
hint: by definition, you have to search for common elements
OpenStudy (michele_laino):
for example \(x=6\) is a common element, since it belongs to both \(A\) and \(B\)
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