# Thread: Find two sets, A and B, such that A E B and A C B.?

1. ## Find two sets, A and B, such that A E B and A C B.?

2. Originally Posted by swedxc

$A=\{1\}\,,\,B=\{\{1\}\,,\,\,1\}$

Tonio

3. You could also use $A = \emptyset, B = \{\emptyset\}$. Then, $\emptyset \in B$ and, since $\forall C, \emptyset \subseteq C$, we can say that $\emptyset \subseteq B$.

Hope this helps!