Question

Find LCM of 5, 10, 15, 20

Answer 1

$\large{ \begin{array}{c|c} \tt 5 & \tt{ 5 , 10 , 15 , 20} \\ \cline{1-2} \tt 2 & \tf { 1 , 2 , 3 , 4} \\ \cline{1-2} \tt 2 & \tf{ 1 , 1 , 3 , 2} \\ \cline{1-2} \tt 3 & \tt{ 1 , 1 , 3 , 1}\\ \cline{1-2} & \tt{ 1 , 1 , 1 , 1} \end{array}}\quad\boxed{\sf{Least\:Common\:Multiplier = 5\times2\times2\times 3 = 60}}$

Answer 2

LCM of 5, 10, 15, 20 = 60