Are the square roots of all positive integers irrational? If not, give an example of the square of a number which is rational number.

Are the square roots of all positive integers irrational? If not, give

1.	Are the square roots of all positive integers irrational? If not, give an example of the square of a number which is rational number.
Answer» Are the square roots of all positive integers irrational? If not, give an example of the square of a number which is rational number.