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Is 21 a rational

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Anonymous

∙ 8y ago
Updated: 10/17/2024

Yes. Any whole number is rational. An irrational number is one that goes on forever without repeating, like √2=1.414213...

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Felicia Kuphal ∙

Lvl 10
∙ 4y ago
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Related Questions

Is 21 a rational or irrational number?

21 is a rational number.


Is the square root of 21 rational?

No, they are not.


Is 21 out of 71 rational or irrational?

21/71 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.


Is 8 out of 21 rational?

no it is not


Is 21 over 3 a rational or irrational number?

21/3 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.


Is 21 over the square root of 4 a rational or irrational?

It is equal to 21/2 which is a rational number


Is 4.2 an irrational or rational number?

It is rational because it can be expressed as a fraction which is 21/5


Why is 8 out of 21 not rational?

Because it can be expressed as a fraction in the form of 8/21


Is 0.21 rational or irrational?

0.21 is a rational number because it can be expressed as a fraction in the form of 21/100


Is the square root of 441 a rational number?

Yes because 21 is a rational number


Why is 0.21 a rational number?

0.21 is a rational number because it can be expressed as a fraction in the form of 21/100


Is 2.1 rational?

Yes. It's the ratio of 21 to 10.

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