Let $A=\{a, b\}, B=\{a, b, c\} .$ Is $A \subset B \,?$ What is $A \cup B \,?$
Let $A=\{a, b\}, B=\{a, b, c\} .$ Is $A \subset B \,?$ What is $A \cup B \,?$
Here, $A=\{a, b\}$ and $B=\{a, b, c\}$
Yes, $A \subset B$
$A \cup B=\{a, b, c\}=B$
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