Question

if set A has 4 elements, how many subsets does A have?

Answer 1

elements in set A are 4.total no. of subset = 2^4                           =2*2*2*2                           =4*4                           =16 total number ob sub set in set A are 16 

Answer 2

The number of subsets =2 to the power of n
=2 to the power of 4
=16