Răspuns :
__1____2____3_____4____5_____
| | | | | (A ∪ B)
| | (A ∩ B)
| (A \ B)
A ∪ B = {1,2,3,4,5}
(1) => A = {1,2,3,4,5} si B = {1,2,3,4,5}
A \ B = {1}
(2) => A = {1,2,3,4,5} si B = {2,3,4,5}
(B are neaparat {2,3,4,5} deoarece din el se scade)
A ∩ B = {2,3}
(3) => A = {1,2,3} si B = {2,3,4,5}
| | | | | (A ∪ B)
| | (A ∩ B)
| (A \ B)
A ∪ B = {1,2,3,4,5}
(1) => A = {1,2,3,4,5} si B = {1,2,3,4,5}
A \ B = {1}
(2) => A = {1,2,3,4,5} si B = {2,3,4,5}
(B are neaparat {2,3,4,5} deoarece din el se scade)
A ∩ B = {2,3}
(3) => A = {1,2,3} si B = {2,3,4,5}