For any three non-empty sets A, B, C, what is (A\cup B)-\{(A-B)\cup(B-A)\cup(A\cap B)\} equal to?
- A. Null set ✓
- B. A
- C. B
- D. (A\cup B)-(A\cap B)
Correct Answer: A. Null set
Explanation
The term (A-B) \cup (B-A) \cup (A \cap B) represents elements in A only, B only, and both A and B. This union is simply A \cup B. Therefore, (A \cup B) - (A \cup B) = \emptyset (Null set).
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