What is the different between Rational and Irrational Numbers

A rational number is a real number which can be expressed as a fraction m/n where m,n are integers as 7=7/1 , 1/3 and -5/9. An irrational number is a real number that can not be represented on the form of a fraction of two integers as root 2 or pi

Hi Sayo, a rational number, as Islam mentioned, can be expressed as a fraction m/n where m and n are integers. This is equivalent to a number that has a finite (not infinite) amount of numbers after the decimal point e.g. 0.7, 0.1, 0.2256, OR if the numbers after the decimal point follow a repeating pattern for example 0.333333333333... or 0.252525252525... these are all rational numbers and can be expressed as m/n. An irrational number is one that cannot be expressed as a fraction m/n, and so it will have an infinite amount of numbers after the decimal point and they will not follow a pattern for example the number pi is 3.141592... with digits going on forever with no pattern, the same occurs for any square root that cannot be simplified e.g. the square root of 2