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

If $p$ and $q$ are distinct prime integers,then their Least Common Multiple $(LCM)$ is . . . . . . .

If $\text{g.c.d.}(12, 40) = 40 + 4x$,then $x = \dots$

There is a circular path around a sports field. Kushan takes $18$ minutes to complete one round of the field,while Rajan takes $12$ minutes for the same. Suppose they both start at the same point and at the same time and go in the same direction. After how many minutes will they meet again at the starting point?

Find the $g.c.d.$ (Greatest Common Divisor) of $75$ and $243$ using Euclid's division algorithm.

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