Find the perfect square numbers between $30$ and $40$.

Find the perfect square numbers between $50$ and $60$.

Can you say whether the following number is perfect square? How do you know?

$1057$

Can you say whether the following number is perfect square? How do you know?

$23453$

Can you say whether the following number is perfect square? How do you know?

$7928$

Can you say whether the following number is perfect square? How do you know?

$222222$

Can you say whether the following number is perfect square? How do you know?

$1069$

Can you say whether the following number is perfect square? How do you know?

$2061$

Write five numbers which you cannot decide just by looking at their units digit (or units place) whether they are square numbers or not.