1. Let U: = {1,2,3,4,5,6,7,8,9} be the universal set. Let A:= {1,4,5}, B:= {4,5,7}, C: {3,5,8,9}.
a) list the elements of A^c
b) list the elements of A – B -> answer A{1,4,5} - B{4,5,7} = {1,7}
c) list the elements of B U C -> answer B{4,5,7} U C{3,5,8,9} = {3,4,7,8,9}
d) list the elements of A^c ∩ B^c
e) list the elements of A ∩ B ∩ C. -> answer A{1,4,5} ∩ B {4,5,7} ∩ C {3,5,8,9} = {1,3,7,8,9}