Q: Is 4 the square of a whole number?

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If the square root is a whole number, then the square of the square root, the original number, is also a whole number; all whole numbers can be expressed as themselves over 1, and so are rational numbers. The answer is thus any square number, ie the square of the natural numbers: 1 (1²), 4 (2²), 9 (3²), 16 (4²), etc.

The square root of 15 being 3.87 the closest whole number would be 4

4

Yes and it is 2

A perfect square is a rational number equal to the square of a whole number.

Related questions

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

If the square root is a whole number, then the square of the square root, the original number, is also a whole number; all whole numbers can be expressed as themselves over 1, and so are rational numbers. The answer is thus any square number, ie the square of the natural numbers: 1 (1²), 4 (2²), 9 (3²), 16 (4²), etc.

The square root of 15 being 3.87 the closest whole number would be 4

4

Yes and it is 2

A perfect square is a rational number equal to the square of a whole number.

They are natural numbers, whole numbers, and integers. 2 is the square root of 4 and 4 is the square of 2.

Approximately 4.

Yes because it is 4

No, it is in between 3 and 4

A perfect square is a number whose square root is a whole number, such as 1, 4, 9, 16, 25, etc.

No, √13 is an irrational number. Only perfect squares have whole numbers square roots, they are 1², 2³, 3², 4², ... which are 1, 4, 9, 16, ...