Choose all of the perfect squares 196 256 390 484 564

{196, 256, 484}

Step-by-step explanation:

14² = 196;

16² = 256;

19² = 361; 390 lies between 361 and 400, and is thus NOT a perfect square;

20² = 400;

22² = 484

564 lies between the two perfect squares 23² and 24², but is itself NOT a perfect square.

Thus, the perfect squares are {196, 256, 484}