Yes...because a whole number does not have an irrational part to it.
No. More frequently it is not.
A perfect square is a rational number equal to the square of a whole number.
No, it may be not even a rational number. Square root of 2 is 1,414213562... for example.
If the whole number is a perfect square, its square root is rational. If not, it's not.
When the whole number is a perfect square, ie it is a whole number squared.
It is always rational.
A perfect square.
The square root of 25 is 5, which is a whole number, an integer, a natural number and a rational number.
It is rational. The root of a perfect square, such as 4, is rational; the root of any positive integer that is not a perfect square is an irrational number.
No. In fact, no odd integer is irrational. They are all rational.
The √49 is 7. It is a rational number.
No, only a small minority are whole numbers.