If $p$ and $q$ are distinct prime integers,then their $LCM$ will be ...........

The $HCF$ of two numbers is $9$ and their product is $288$. Find their $LCM$.

Using Euclid's division algorithm,find the Highest Common Factor $(HCF)$ of the following pair of numbers and determine if they are co-prime:
$847, 2160$

If $HCF(a, b) = 12$, then which of the following cannot be the $LCM(a, b)$?

If $HCF(a, b) = 8$,$LCM(a, b) = 64$ and $a > b$,then $a = ?$ (Options: $8, 16, 32, 64$)

The $LCM$ of $7, 11,$ and $17$ is .......