Question

The LCM and HCF of two given numbers are $960$ and $8$ respectively. If one of them is $64,$ then the other number is

• A. $60$
• B. $120$
• C. $240$
• D. $480$

Answer 1

The correct option is B $120$

Given, LCM $=960$, HCF $=8$, one number $=64$

We know that HCF $\times$ LCM $=$ Product of two numbers
Let the unknwon number be $x$
$960\times 8=64\times x$

$\therefore x=\frac{960\times 8}{64}=120$