Question

Find the LCM of 32, 64 & 128 by common division method.

Answer 1

L.C.M of 32, 64, 128 is as follows:

$\begin{array}{cc}2& 32,64,128\\ 2& 16,32,64\\ 2& 8,16,32\\ 2& 4,8,16\\ 2& 2,4,8\\ 2& 1,2,4\\ 2& 1,1,2\\ & 1,1,1\end{array}$
(1 mark)
$L.C.Mof32,64,128is2\times 2\times 2\times 2\times 2\times 2\times 2=128$

= 128 (1 mark)