U={1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15} A={2, 3, 5, 7, 9, 11, 15}
B={3, 5, 9, 10, 12, 15} C={7, 8, 12, 13, 14, 15} D={1, 3, 10, 11, 12}
А;С;D не имеют общих элементов
A\(A ∩ C ∩ D)=A
vector {A\(A ∩ C ∩ D)}=\vector {A}=U\A={1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15} \{2, 3, 5, 7, 9, 11, 15}={1;4;6;8;10;12;13;14}
(A ∩ C ∩ D)\A= ∅
vector{(A ∩ C ∩ D)\A}=vector{ ∅ }=U ( см скрин)
vector{A\A ∩ C ∩ D} ∩ vector{(A ∩ C ∩ D)\A}= {1;4;6;8;10;12;13;14} ∩ U={1;4;6;8;10;12;13;14}
