Question 401 of 480
Which of the following is always true for a set A and its complement A′ within a universal set U?
- A ∩ A′ = U
- A ∪ A′ = ∅
- A ∪ A′ = U
- A ⊂ A′
Correct Answer:
C
Explanation
The union of a set and its complement covers every element in the universal set.