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OpenStudy (anonymous):
Find the intersection of the three sets: A = {–2, 7, 8, 11}, B = {–2, 7, 11}, C = {–2, 8, 11}.
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OpenStudy (dape):
The intersection are the numbers which are in all sets, so just find the numbers that are in all those sets you listed.
OpenStudy (dape):
For example -2 is in A, B and C, so -2 is in the intersection.
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