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A rational number is any number that can be written as a fraction.

2 can be written as (2/10 or (4/2) or (10/5) and so on, so it is a rational number.◄

An example of a number than cannot is √2 or (pi), so are called irrational.

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Q: Is the number two a rational number?
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Is the product of two rational numbers irrational?

The product of two rational numbers is always a rational number.


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Every time. The sum of two rational numbers MUST be a rational number.


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Does there exist an irrational number such that its square root is rational?

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You get a rational number.


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What is any number that can be expressed as a ratio of two integers?

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