Question

If $(A\cup B)\cap (A\cap B)=A$, then which of the following is true?

• A. (a) $A\subset B$
• B. (b) $B\subset A$
• C. (c) $A=\varphi$
• D. (d) Both (a) and (c)

Answer 1

Answer: (A)

Use the concept of subsets.