Question:
If A = {3, {2}}, find P(A).
Solution:
A = {3, {2}}
We have to find $P(A)$ which is power set of $A$
The power set of set $A$ is collection of all possible subsets of $A$
The possible subsets of $A$ are $\{\phi\},\{3\},\{\{2\}\},\{3,\{2\}\}$
Hence the power set $P(A)$ will be
$\mathrm{P}(\mathrm{A})=\{\{\phi\},\{3\},\{\{2\}\},\{3,\{2\}\}$