1- Sendo A = {1,2,3,4,5}, B = {1,3,5,7,9} e C = {5,6,7,8,9,10} e D = {9,10,11,12,13} determine: A ∪ B
A ∩ B
A ∪ B ∪ C
A ∩ B ∩ C
A − B
D − C
CA B
C − D
(A ∩ C) ∪ D
(C − B) ∩ D
A ∪ B ∪ C ∪ D
A ∩ B ∩ D
(A ∪ D) ∩ (B ∪ C)
Respostas
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Resposta:
A ∩ B = { 1,3,5}
A ∪ B ∪ C = {1,2,3,4,5,6,7,8,9,10}
A ∩ B ∩ C = {5}
A − B = { 2,4}
D − C = {11,12,13}
CA B = {7,9}
C − D= {5,6,7,8}
(A ∩ C) ∪ D = {5} ∪ D = {5,9,10,11,12,13}
(C − B) ∩ D= {6,8,10} ∩ D = {10}
A ∪ B ∪ C ∪ D = {1,2,3,4,5,6,7,8,9,10,11,12,13}
A ∩ B ∩ D= { 1,3,5} ∩ D = vazio
(A ∪ D) ∩ (B ∪ C) = {1,2,3,4,5,9,10,11,12,13} ∩ {1,3,5,6,7,8,9,10}= {1,3,5,9,10}
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