Definition of

Irrational Number

A real number that can NOT be made by dividing two integers (an integer has no fractional part).

"Irrational" means "no ratio", so it isn't a rational number. We aren't saying it's crazy!

Its decimal also goes on forever without repeating.

Example: π (the famous number "pi") is an irrational number, as it can not be made by dividing two integers.

pi is irrational

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