What’s the LCM of 12 and 15?

Answer: In order to find the Least Common Multiple of 12 and 15, first we need to list the first ten multiples of 12 and 15 respectively.

1^st ten Multiples of 12: 12, 24, 36, 48, 60, 72, 84, 96, 108, 120

1^st ten Multiples of 15: 15, 30, 45, 75, 90, 105, 120, 135, 150

Now let us look for the first common multiple present in 12 as well as 15, they are 60, 120, and 180. 

Here we can see that 60 is the smallest common multiple of 12 and 15 and therefore, the LCM.

Therefore, we can say that the LCM of 12 and 15 is 60.