Question 895361
An irrational number cannot be written as a simple fraction.
{{{sqrt3/8}}} is irrational because the sqrt3 is irrational.
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There's a nice explanation from NASA on the <a href = http://www.grc.nasa.gov/WWW/K-12/Numbers/Math/Mathematical_Thinking/irrationality_of_3.htm>The Irrationality of the Square Root of 3</a>