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Q: Is the square root of a whole number always a whole number?

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No.

No.

The square root of 16 is 4 which is a whole number.

a positive integer

Yes. The square of a whole number is always a whole number. For example, 3 squared is 9, so the square root of 9 is 3. What you never have, is the square root of a whole number being a fraction that is not a whole number. The square root of a whole number is either a whole number or an irrational number. For example, the square root of 2 is irrational, because there are no 2 whole numbers a and b such that a/b squared is 2. This is not terribly difficult to prove, but I have already said too much; I have answered your question.

No. More frequently it is not.

The square root of 15 is not a whole number.

The whole number closest to the square root of 65 is 8. The whole number closest to the square root of 65 is 8.

No, it may be not even a rational number. Square root of 2 is 1,414213562... for example.

The square root of 26 is not a whole number

Negative the square root of 36 is -6, which is a whole number.

The square root of 55 to the nearest whole number is 7.

Negative the square root of 36 is -6, which is a whole number.

A perfect square root is where the square root of a number equals another whole number. For example, the square root of 144 is 12. 12 is a whole number thus 144 is a perfect square root.

48 is not a square number, so the square root of 48 is irrational and can not be represented as a whole number.

If the whole number is a perfect square, its square root is rational. If not, it's not.

No

When the whole number is a perfect square, ie it is a whole number squared.

For a number to be a perfect square, the number's square root has to be a whole number. 9 is a perfect square because its square root is a whole number, 3. If the square root of the number is a decimal, then it is not a perfect square. For example, 13 does not divide evenly so it not a perfect square.

if its square root is a whole number

No - a natural number is a whole number. Therefore, the square root of 49 is a natural number, but the square root of 50 is not.

The square root of seven is a real number, but it is not a whole number.

11 is the square root

A perfect square.

no, 28 has no whole square root; the square root of 49 is 7