The $HCF$ of $6$ and $20$ is .......

Match the following items:

$Q.1.$ $HCF$ of $8$ and $6$	$A. 49$
$Q.2.$ $LCM$ of $(26, 91)$	$B. 182$
	$C. 2$

For two positive integers $a$ and $b$,if $\text{HCF}(a, b) = 7$ and $\text{LCM}(a, b) = 385$,then the product $a \times b$ is:

The Least Common Multiple $(LCM)$ of the smallest prime number and the smallest composite number is . . . . . . .

If $\text{HCF}(65, 117) = 65m - 117$,then find the value of $m$.

For any two positive integers $a$ and $b$,what is the relationship between their $HCF$ and $LCM$? $\text{HCF}(a, b) \times \text{LCM}(a, b) = \text{?}$