Definition of a rational number: A rational number is a number that can be written as a fraction.
Rational numbers come in three different forms: integers, fractions and terminating or recurring decimals.
Definition of an irrational number: An irrational number is one that can not be written as a fraction.
Irrational things: never ending, non repeating decimals. Square roots of positive integers are either irrational or integers. pie is also irrational.
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