Question

How many element in set A = { x : x = n2 , n is a prime and 2 < n < 10 }

Answer 1

Answer:

refer the given attachment

Answer 2

If x = n²

And n is prime number greater than 2 and less than 10

Then n=3/5/7,and x= 3²/5²/7²

:Set A={9,25,49}