Question

The LCM of two number is 192 and their product. Is 3072.find their HCF

Answer 1

Do you know that, if there are 2 numbers a and b then
$hcf(a,b)lcm(a,b) = ab$
So
$hcf(a,b) = \frac{ab}{lcm(a,b)} = \frac{3072}{192} = 16$

Answer 2

the hcf will be 16
LCM×HCF =product of numbers
192 ×HCF=3072
so HCF= 16