Question

if A is a set of even numbers between 1 and 20, and B is the set of the set of prime numbers between 1 and 20.
list all the elements in set A and in set B.

Answer 1

Set B will have 1,2,3,5,7,11,13,17,19
And set A will have 2,4,6,8,10,12,14,16,18,20