The power set of set A = {1, 2} is ……….
Given set:
\[ A = \{1,2\} \]
The power set of a set is the collection of all possible subsets of the set.
Subsets of \(A\) are:
\[ \Phi,\ \{1\},\ \{2\},\ \{1,2\} \]
Therefore, the power set of \(A\) is:
\[ P(A) = \{\Phi,\{1\},\{2\},\{1,2\}\} \]
Answer
\[ \boxed{P(A)=\{\Phi,\{1\},\{2\},\{1,2\}\}} \]