# What is the LCM of 5 and 9?

LCM of 5 and 9: It is the least number which is perfecty divisible by 5 and 9

## Answer: LCM of 5 and 9 is 45

Lets see how to find the LCM of 5 and 9

## Explanation:

LCM least common multiple : It is the smallest(least) number which is exactly divisible by the given numbers.

## Methods to Find LCM of 5 and 9

Let us use the following methods to find the LCM of 5 and 9

- Listing the Multiples
- Formula

### LCM of 5 and 9 by Listing Method

Step 1: Write the first few multiples of the given numbers 2 and 8.

Step 2: Now, spot the common multiples of 2 and 8 amongst the listed ones.

Step 3: Mark the lowest amongst the common multiples as the least common multiple of 2 and 8.

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

The Greatest common factor of (5,9) = 1

Therefore

LCM of 5 and 9 = (5 × 9) / 1

= 45/1 = 45

LCM of (5,9) = 45

Irrespective of the method used, the solution to our question LCM of (5,9) remains the same.