Question

The LCM and HCF of two numbers are 432 and 72 respectively. If one of the numbers is 216, what is the other ?

Answer 1

Let the other number be x.
Now, HCF × LCM = Product of two numbers
⇒ 72 × 432 = x × 216
$\Rightarrow x=\frac{72\times 432}{216}$
= 144
​Hence, the other number is 144.