Question

Find the $HCF$ by successive division method.
$72,81$

Answer 1

We have,

$\begin{array}{c}72\left)81\right(1\\ \underset{–}{-72}\\ 9\left)72\right(8\\ \underset{–}{-72}\\ 0\end{array}$

Therefore,

Highest common factor$=9$