Question

va rog am nevoie de ele pâna la ora 11!!

Answer 1

3. A∪B = 0,1,2,3,4,5,6;   B∪A = 0,1,2,3,4,5,6;  A∩B = 2;  (A∪B)∪C = 0,1,2,3,4,5,6,7,8,9;   A∪(B∪C) = 0,1,2,3,4,5,6,7,8,9;   B∩A = 2;  A-B = 1,3,5;  B-A = 0,4,6;  (A-B)-C = 3;  A- (B-C) = 1,3,5.

4. a) A = a,b;  B = b,c

b) A = a,b,c; B = a,b,c

c) A = a,b,c; B = d,e,f