Question

Let A and B be two sets. Then

• A. A ∪ B $\subseteq$ A ∩ B
• B. A ∩ B $\subseteq$ A ∪ B
• C. A ∩ B = A ∪ B
• D. None of these

Answer 1

Answer: (B)

A ∩ B $\subseteq$ A ∪ B

Answer 2

$A \cap B \subseteq A \subseteq A \cup B$, ∴$A \cap B \subseteq A \cup B$.