In each of the following, determine whether the statement is true or false. If it is true, prove it. If it is false, give an example.
If $x \in A$ and $A \not\subset B$, then $x \in B$
In each of the following, determine whether the statement is true or false. If it is true, prove it. If it is false, give an example.
If $x \in A$ and $A \not\subset B$, then $x \in B$
False
Let $A=\{3,5,7\}$ and $B=\{3,4,6\}$
Now, $5 \in A$ and $A \not\subset B$
However, $5 \notin B$
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$\emptyset $
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