Wyznacz zbiór D = ( A∪B) \ C. piotr69: Dane są zbiory A = { 3,4,5,6,7,8} , B={4,5,9} , C = { 1,2,3,4}. Wyznacz zbiór D = ( A∪B) \ C.

Anna: A∪B = {3,4,5,6,7,8,9} D = (A∪B)\C = {3,4,5,6,7,8,9} \ {1,2,3,4} = {5,6,7,8,9}