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A rational number is one that can be expressed as a ratio of two whole numbers (like a fraction). An irrational number is a real number that is not rational.

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Q: What is the definition of irrational?
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Are all irrational numbers are surds?

Yes. The definition of a surd is "an irrational number"


What are the factors and prime factors of pi?

Pi is irrational. Irrational numbers, by definition, have no factors.


Are fractions irrational?

Fractions are rational by definition.


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No. Irrational numbers by definition fall into the category of Real Numbers.


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That's an irrational number.


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The formal definition of an irrational number is onethat can't be converted into a fractional equivalent.


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