Question

If A and B are any two sets, then $A\cup B$ is equal to:

• A. $(A-B)\cup (B-A)\cup (A\cap B)$
• B. $(A^0\cap B^0{)}^0$
• C. $(A-B)\cup (B-A)$
• D. $A\cup (B-A)$

Answer 1

Answer: (A)

$(A-B)\cup (B-A)\cup (A\cap B)$

A & B are two sets

AᴜB = (A-B) + (A∩B) + (B-A)