Question

If Ais a set with cardinality n then |P(A) = ..
a) n2
b) 2n
c) 2n
d) n​

Answer 1

$\blue{explanation}$

Cardinality is the number of elements in a set.

Now, the number of elements in the power set of a set containing n elements is 2n

Here n=4, So, no. of elements in power set of A is 2 _4=16

Hence, option C is correct.