Select all perfect squares from the list: 16, 18, 25, 30.
Note
16 = 4^2 and 25 = 5^2 are perfect squares; 18 and 30 are not perfect squares.
Select all perfect squares from the list: 16, 18, 25, 30.
16 = 4^2 and 25 = 5^2 are perfect squares; 18 and 30 are not perfect squares.