Reuniunea a doua multimi A si B consta in scrierea tuturor elementelor scrise o singura data
Intersectia dintre A si B consta doar in scrierea elementelor comune
Diferenta A/ B inseamna toate elementele ce se gasesc in A dar nu si in B
AUB ={0,1,2,3,4,5,6}
AU(BUC) = AU{0,1,2,3,4,6,7,8,9} = {0,1,2,3,4,5,6,7,8,9}
(A/B)/C= {1,3,5}/ C={5}
BUA = AUB = {0,1,2,3,4,5,6}
B ∩A = {2}
A/(B/C) = A/{0,2,4} = {1,3,5}
A ∩ B = {2}
A/B = {1,3,5}
(AUB)UC = {0,1,2,3,4,5,6} U C = {0,1,2,3,4,5,6,7,8,9}
B/A= {0,4,6}
