If n(A) = 4 , find n [P (A) ]

Dear Student
No. Of elements in power set of any set having 'n' elements = 2ⁿ
Hence , In given question, no. Of elements in given set is 4
So,
No. Of elements in power set= 2^4
   = 16
Hence, n[P(A)]= 16
Regards