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Dados os conjuntos A= [1, 3[ e B= ]2,9], os conjuntos (A ∪ B), (A ∩ B) e (A - B) São, respectivamente
a) [1,9], ]2,3[, [1,2] b) ]1,9], ]2,3[, ]1,2] c) ]1,9[, ]2,3[, ]1,2] d) [1,9], ]2,3], [1,2] e) [1,9], [2,3], [1,2]
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