# What is the LCM of 3, 9, and 21?

Least Common Multiple or lowest common multiples of two or more numbers is the smallest number among all common multiples of the given numbers.

## Answer: Least Common Multiple of 3, 9, and 21 is 63

## Explanation:

### Methods to find LCM of 3, 9 and 21

### LCM of 3, 9 and 21 by Lists of Multiples

The least among the common multiples is the LCM of 3, 9 and 21

LCM of 3, 9 and 21 by Division

LEt us divide all the given 3 numbers simultaneously using a prime number till we get 1. The product of the prime numbers used for division is the LCM of 3 , 9 and 21.

We will get the LCM same for the given numbers by using different methods