The Least Common Multiple $(LCM)$ of $6$ and $20$ is . . . . . . .

Find the Least Common Multiple $(LCM)$ for the following pairs and match them with the correct options:

$Q.1.$ $\text{LCM}(7, 49)$	$A. 50$
$Q.2.$ $\text{LCM}(10, 25)$	$B. 49$
	$C. 51$
	$D. 50$

The decimal expansion of $\frac{18}{5^{3}}$ will terminate after how many decimal places?

If $m$ and $n$ are distinct prime integers,then their $HCF$ is .......... .

What type of decimal expansion is $0.9999...$? (Terminating,Non-terminating repeating,Non-terminating non-repeating)

The last digit of $2^{m} \cdot 5^{n}$ (where $m, n \in N$) is . . . . . . .