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Actually there are more Irrational Numbers than rational numbers.

Most square roots, cubic roots, etc. are irrational (not rational). For example, the square of any positive integer is either an integer or an irrational number.

The numbers e and pi are both irrational. Most expressions that involve those numbers are also irrational.

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2011-02-22 17:49:14
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Q: Which is a real number that is not a rational number?
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Related questions

If a number is a real number then is it a rational number?

Not necessarily. All rational numbers are real, not all real numbers are rational.

Is a real number always sometimes or never a rational number?

Sometimes. The number '4' is real and rational. The number 'pi' is real but not rational.

Are there real number that are not rational number?

A real number dosen't have to be a rational number as a real number can be rational or irrational i.e the root of 2 is irrational and real. So is (pi).

Is a decimal a considered a real number and a rational number?

Decimals are real. They can be rational or irrational.

Can a real number that is not a rational number is a?

A real number which is not a rational number is an irrational number.

Every rational number is a real number?

Yes it is, but not every real number is a rational number

Is -3 a rational number and a real number?

Yes. -3 is both rational and real. -3 is an integer. All integers are rational numbers. All rational numbers are real numbers. Thus -3 is a rational number and a real number.

Is 34 and real and rational number?

Yes, 34 is a real and rational number

To which subsets of the real numbers does the number 1.68 belong?

Real number, Rational Number

Which number is an integer a rational number and a real number?

Every integer is also a rational number and a real number.

Is a real number sometimes a rational number?

Infinitely rarely, a real number is also a rational number. (There are an infinite number of rational numbers, but there are a "much bigger infinity" of real numbers.)

What is a number that's real and rational?

Every rational number.

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