If A={x∈Z:x2<5}A = \{x \in \mathbb{Z} : x^2 < 5\}A={x∈Z:x2<5}, what is P(A)P(A)P(A)?
{{−2,−1,0,1,2}}\{ \{-2, -1, 0, 1, 2\} \}{{−2,−1,0,1,2}}
A set with 25=322^5 = 3225=32 elements
A set with 555 elements
{∅,{1},{2}}\{ \emptyset, \{1\}, \{2\} \}{∅,{1},{2}}