If A and B are two sets such that A ⊆ B then find:
Question:
If $A$ and $B$ are two sets such that $A \subseteq B$ then find:
(i) $\mathbf{A} \cup \mathbf{B}$
(ii) $\mathbf{A} \cap \mathbf{B}$
Solution:
Given; $A$ and $B$ are two sets such that $A \subseteq B$.
(i) $A \cup B=A$
(ii) $A \cap B=B$