Question

8. Даны множества A={2; –2; 7; 8; –9; 0}; B={12; –2; –7; 8; 9; 0; –9};
C={1; –2; –7; 9; –10}. Найдите:
a) AB; б) AC; в) CB; г) BA;
д) BC; e) (A∩B)∩C; ж) (BC)∪ A; з) C∪(AB).

Answer 1

A={2; –2; 7; 8; –9; 0}; B={12; –2; –7; 8; 9; 0; –9}; C={1; –2; –7; 9; –10}. 

a) AB={2; 7};
б) AC={2; 7; 8; –9; 0};
в) CB={1; –10};
г) BA={12; –7; 9;}; 
д) BC={12; 8; 0; –9};
e) (A∩B)∩C={–2};
ж) (BC)∪ A={12; 2; –2; 7; 8; –9; 0};
з) C∪(AB)={1; –2; –7; 9; –10; 2; 7}.