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Sometimes, it depends on if it can be written as a ratio, if it can be a ratio, then it is rational.

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14y ago

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How do you tell if a number is irrational?

If it is a terminating or recurring decimal then it is not irrational. If it is an infinite, non-recurring decimal, it is irrational.


A decimal number is an irrational number?

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When a decimal can't be expressed as a fraction then it is an irrational number.


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