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Q: Is 21 a rational or irrational number?

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irrational

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

10.01 is a rational number

It is a rational number.

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

Rational

It is a rational number

No rational number is an irrational number.

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

Irrational.

it is a rational number but 4.121314..... is an irrational no

No number is irrational and rational.

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