Find the HCF and LCM of:861, 1353 - Vidyadip

Question

Find the HCF and LCM of:861, 1353

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Answer

The given numbers are 861 and 1353.We have:
$\begin{array}{c|c}3&861\\\hline7&287\\\hline{41}&41\\\hline&1\end{array}$
$\begin{array}{c|c}3&1353\\\hline11&451\\\hline41&41\\\hline&1\end{array}$
Now, we have:
$861=3\times41\times7$
$1353=41\times11\times3$
$\therefore$ HCF $=41\times3=123$
Also, LCM $=41\times3\times11\times7=9471$

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