Question

Find the L.C.M of $12$ and $15$ by listing multiples.

Answer 1

Finding L.C.M by using the listing method.

Multiples of $12$ are $12,24,36,48,60,72,84,96,108,120$ and so on.

Multiples of $15$ are $15,30,45,60,75,90,105,120,135,150$ and so on.

Common multiples of $12$ and $15$ are $60,120$ and so on.

Thus, the smallest/least common multiple or L.C.M of $12$ and $15$ is $60$.