What is the LCM of 12, 15, and 18?
LCM of 12, 15, and 18 is the least number which is exactly divisible by 12, 15, and 18.
Answer: LCM of 12, 15, and 18 is 180
Lets see how to find the LCM of 12, 15, and 18
Explanation:
Least Common Multiple of three numbers is the smallest number that the three number divides exactly.
Look at the two methods shown below to find LCM(12, 15, 18)

Find LCM(12, 15, 18) by Listing Method
In this method, we list the first few multiples of 12, 15, and 18 and identify the common multiples.
The least among the common multiples is the LCM of 12, 15, and 18

Find LCM(12, 15, 18) by Common Division Method
In this division method, we divide the numbers simultaneously with prime numbers and stop it when we don't have a prime number to divide the given numbers.
Observe that by using any of the methods, the solution to LCM of 12, 15, and 18 is the same.