If P(A) denotes the power set of A and A is the void set, then what is number of elements in `P(P(P(P(A))))`

If P(a) denotes the Power set A and A is void set, then n(P(P(P(a)))) is:

If A = phi the empty set, then write the number of elements in P(A).

Suppose P{S) denote the power set of the set S. Let A = {1}. If the number of elements in the P(P(P(P(A)))) is 4n then n =__

If A={1,2},P(A) denotes power set of A ,then the number of elements in P(P(P(P(A))) is 2^256 2^1024 2^512 2^(2^16)

If a set A contains 4 elements, then what is the number of elements in A xx P(A) ?

If A is the null set, find the number of elements in the power set P(P(A)) .

If A is the null set, find the number of elements in the power set P(P(A)) .

If A is the void set varphi then P(A) = .

If a set A has n elements then find the number of elements in its power set P(A) .