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

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Q: Is 21 out of 71 rational or irrational?

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irrational

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No, it is a rational number because it can be expressed in fraction form: -71/1

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

No. A rational plus an irrational is always an irrational.

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irrational

The square root of 71 is an irrational number

21 is a rational number.

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

irrational

No, it is a rational number because it can be expressed in fraction form: -71/1

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

irrational, it has a never ending decimal

No. It can be written as a fraction, so it is rational.

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