Question 641886
An {{{irrational}}} number is a real number that {{{cannot}}} be written as a {{{simple}}} {{{fraction}}}.

some examples of irrational numbers:

{{{Pi=3.1415926535897932384626433832795=((question-mark)/(question-mark))(means-no_ratio)}}}

The popular approximation of {{{22/7 = 3.1428571428571}}}... is close but not accurate.

Many square roots, cube roots, etc are also irrational numbers. Examples: {{{sqrt (2)}}}, {{{sqrt (3)}}},{{{sqrt (99)}}}