Question

Question 183

Find the LCM of 160, 170 and 90.

Answer 1

LCM of 160, 170 and 90 by division method,

$\begin{array}{ccc}& 2& 160,170,90\\ & 2& 80,85,45\\ & 2& 40,85,45\\ & 2& 20,85,45\\ & 2& 10,85,45\\ & 3& 5,85,45\\ & 3& 5,85,15\\ & 5& 5,85,5\\ & 17& 1,17,1\\ & & 1,1,1\end{array}$

LCM of 160, 170 and 90 = $\left(2^5\right)\times \left(3^2\right)\times 5\times 17=24480$