# What is The LCM of 18 and 20?

The smallest number which on division by the two numbers leaves 0 as the remainder is called as the LCM of 18 and 20.

## Answer: LCM of 18 and 20 is 180

## Explanation:

Lowest Common Multiple .is the smallest number which the given numbers divides exactly

We can find the LCM of the numbers through the methods that are listed below.

### LCM of 18 and 20 by the method of Common Division:

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.

### LCM of 18 and 20 by the method of Formula

Formula: LCM(a,b) = ( a × b) / GCF (a,b)

Greatest Common Factor of (18, 20) = 2

Therefore

LCM of 18 and 20 = (18 × 20) / 2

= 360/2 = 180

LCM of 18 and 20 : 180