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Yes. 81 is a:- Real number

- Rational number

- Integer

- Natural number

- Counting number

- Square number

- Odd number

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12y ago

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Related Questions

Is 81 rational or inrational?

81 is a rational number


Is the square of 81 a rational number?

The square root of 81 is 9 which is a rational number


Is the root of 81 an irrational number?

No. The square root of 81 is 9, which is a rational number.


Is negative 81 a rational number?

Yes, it is.


Is sqrt 81 a irrational number?

No because the square root of 81 is 9 which is a rational number


Is the number 81 rational?

Yes and it is also a square number because 9*9 = 81


What is the value of n for which square root of n be a rational number?

n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.


Is the square root of 81a rational number?

Yes. The square root of 81 is 9, which is a rational number.


Is -81 an irrational number?

No, -81 is not an irrational number because it can be represented in the form x/y = -81


Is the square root of 81 rational?

Yes. The square root of 81 is 9 - a natural number and all natural numbers are rational numbers.


Is the square root 81 rational or irrational?

The square root of 81 is 9, which is a whole number. Since all whole numbers are considered rational numbers (as they can be expressed as a fraction with a denominator of 1), the square root of 81 is rational.


Is 81 a irrational number?

No. 81 is a rational number. An irrational number is a number with an endless amount of digits like pi or the square root of 2.