Question

Write any three numbers of two digits and find their LCM.

Answer 1

Find LCM of three numbers of two-digits :

Consider three two-digits number.

$10,15,20$

Prime factors of $10,15,20$

$\begin{array}{rcl}10& =& 2\times 5\\ 15& =& 3\times 5\\ 20& =& 2\times 2\times 5\end{array}$

Then,

$\begin{array}{rcl}\mathrm{LCM}\left(10,15,20\right)& =& 2\times 2\times 3\times 5\\ & =& 60\end{array}$

Therefore, the three numbers of two-digits are $10,15,20$ and their LCM is $60$.