If ∪ = {2, 4, 6, 8, 10, 12, 14, 17}, where ∪ is Universal set and some set A = {1, 4, 6, 9, 11, 12}, then set AC is ________.
can't be determined
Let ∪ be the universal set and A be a subset of ∪. Then the complement of A is the set of all elements of ∪ which are not the elements of A.
∴ AC = ∪ - A if A ⊂ ∪
Here A ⊄ ∪
So, AC is not defined here.