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Every integer is a rational number, and some integers are perfect squares. These are the only rational numbers to have an integral square root.

Q: Rational numbers who square roots are whole numbers?

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No. Square roots of whole numbers that don't result in whole numbers (e.g. the square root of 64 is 8), are considered to be "Irrational Numbers".

Yes. Not only that, they are counting numbers.

Very rarely. Square roots are only whole numbers for perfect squares.

Some square roots of whole numbers are integers, some of them are irrational numbers. The square root of four for instance is a rational number, 2. The square root of two however is an irrational number, approximately 1.414211356.

All whole numbers between 1 and 400 (=20 square).

Related questions

Rational numbers whose square roots are whole numbers are themselves whole numbers. They are called square numbers, e.g. 1, 4, 9, 16, 25 and so on.

They are perfect squares.

No. Square roots of whole numbers that don't result in whole numbers (e.g. the square root of 64 is 8), are considered to be "irrational numbers".

No. Square roots of whole numbers that don't result in whole numbers (e.g. the square root of 64 is 8), are considered to be "Irrational Numbers".

Yes. Not only that, they are counting numbers.

The square root of 13 is irrational. All square roots of whole numbers are irrational unless the number is a perfect square.

Numbers with square roots that are whole numbers

A rational number is a number that can be expressed as the division of two integers, while the divisor is not zero. An irrational number is any number that is not rational.Whole numbers are rational, because the divisor is 1. It has nothing to do with square roots.

Every whole number

It can be. The square roots of 2.25 are -1.5 and 1.5: rational numbers.

Very rarely. Square roots are only whole numbers for perfect squares.

Some square roots of whole numbers are integers, some of them are irrational numbers. The square root of four for instance is a rational number, 2. The square root of two however is an irrational number, approximately 1.414211356.