Find three common multiples for :

$3$ and $4$

Find three common multiples of $2$ and $5$.

Find three common multiples of $5$ and $10$.

Find the L.C.M of $6$ and $8$.

Find the L.C.M of $3$ and $5$.

Find the L.C.M of $10$ and $12$.

Find the L.C.M of $5$ and $7$.