# 1. Classify the following numbers as rational or irrational: (iv)     $\frac{1}{\sqrt{2}}$

Given number is $\frac{1}{\sqrt{2}}$
$\Rightarrow \frac{1}{\sqrt{2}}= \frac{\sqrt{2}}{2}=\frac{1.41421356..}{2} =0.7071068...$