Is 81 rational or irrational?

Understand the Problem

The question is asking whether the number 81 is classified as a rational or irrational number. A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b is not zero. Since 81 can be expressed as 81/1, it is indeed a rational number.

More Information

A rational number can be expressed as the quotient or fraction of two integers. Since 81 can be written as 81/1, it is a rational number.

Sources

• Is 81 a rational number? - Socratic - socratic.org
• Is 81 a rational number? [SOLVED] - Math Warehouse - mathwarehouse.com
• Examine whether the following number is rational or irrational: √81 - BYJU'S - byjus.com