The $HCF$ of the smallest prime number and the smallest composite number is ........

If $\text{g.c.d.}(336, 52) = 4$,then $\text{l.c.m.}(336, 52) = \dots$

What is the $HCF$ of $65$ and $117$?

If the Least Common Multiple $(LCM)$ of two numbers is equal to their product,then their Greatest Common Divisor $(GCD)$ is . . . . . . .

Find the $HCF$ of $96$ and $404$ by the prime factorization method,and hence find their $LCM$.

The product of the greatest common divisor ($G$.$C$.$D$.) and the least common multiple ($L$.$C$.$M$.) of two positive integers $a$ and $b$ is equal to: (where $a, b \in N$)