Irrational Number (Noun)
Meaning
A real number that cannot be expressed as a rational number.
Classification
Nouns denoting quantities and units of measure.
Examples
- The square root of 2 is a well-known irrational number that cannot be expressed as a finite decimal.
- Pi is an irrational number that has been calculated to over 31 trillion decimal places.
- The decimal representation of an irrational number goes on indefinitely in a seemingly random pattern.
- Euler's number, approximately 2.71828, is an irrational number used in mathematics to describe growth and change.
- The sum of a rational number and an irrational number is always an irrational number.