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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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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.


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


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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).


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


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