Question

If n[P(A)] = 512 find n(A)

Answer 1

n[P(A)] = $2^{n}$
where n of no of elements
so  512  =  $2^{n}$        so $2^{9}$ = $2^{n}$

n = 9 
so n(A) = 9

Answer 2

n(A) =9

Step-by-step explanation:

m is number of elements

512=2^m

so, 2^m=2^9

m=9

n(A)=9