4. Fie mulțimile: A={0;1;3;4} ; B={1;2;4;5;7} ; C = {2:4:7}.
Să se afle: AnB: A\B; B\A; BnC; B\C; AnC; BuC; (AuB)nC.
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Explicație pas cu pas:
A n B = { 1,4}
A-B = { 0,3}
B-A = { 2,5,7}
B n C = {2,4,7}
B-C = {1,5}
A n C = { 4}
B u C = { 1,2,4,5,7}
(A U B) n C = { 0,1,2,3,4,5,7} n { 2,4,7} = { 2,4,7}