Question

A = {x|x is a prime number which is a divisor of 30}
roaster form​

Answer 1

Here is the answer

It's is a null set because a prime number are number which doesn't have a factor so it can't be a dividend or divisor of any number

Therefore it's a null set!

Answer 2

Answer:

A = {1,2,3,5} is the roaster form