# What is the LCM of 11 and 18?

The LCM (Least Common Multiple) of 11 and 18 is the least number which is exactly divisible by all the numbers 11 and 18.

## Answer: LCM of 11 and 18 is 198

We will explain two methods to find the LCM of 11 and 18.

**Explanation:**

The two methods that we are using to find the LCM of 11 and 18 are shown below.

- LCM (11, 18) by Formula
- LCM (11, 18) by Common Division Method

### Method1: LCM of 11 and 18 by Formula

The formula of LCM is LCM (a,b) = (a × b) / GCF (a,b)

The Greatest Common Factor (GCF) of (11, 18) = 1

Therefore

LCM (11, 18) = (11 × 18) / GCF (11, 18)

= (18 × 27) / 1

= 198 / 1 = 198

So, LCM of 11 and 18 is 198

### Method2: LCM of 11 and 18 by Common Division Method

In this division method, we divide the numbers 11 and 18 simultaneously with prime numbers and stop the dividing process when we don't have a prime number to divide either of 11 and 18.

The answer to LCM of 11 and 18 is the same, irrespective of the methods used.