What is the LCM of 15 and 18?
LCM of 15 and 18 is the smallest number which is exactly divisible by both 15 and 18.
Answer: LCM (15,18): 90
Lets see how to find the LCM of 15 and 18
Least Common Multiple is the smallest number which the given numbers can perfectly divide.
We can find the LCM of the numbers in many ways the commonly used methods are listed below.
Different Methods to Find the LCM of (15,18)
Let us use the following methods to find the LCM of 15 and 18
- Listing the Multiples
- Common Division
LCM of 15 and 18 by Method of Listing
In this method, we list the first few multiples of 15 and 18 and spot the common multiples.
The least among the common multiples is the LCM of 15 and 18
LCM of 15 and 18 by Method of Common Division
In this division method, we divide the numbers parallely with prime numbers and stop until we don't have a prime number to divide the given numbers.
Irrespective of the method, the solution to our question LCM of 15 and 18 is the same.