Question

What is the LCM of $4$ and $5$?

Answer 1

Find the LCM of $4$ and $5$.

LCM of two or more numbers is the smallest non-zero common multiple of the numbers.

Multiples of $4$are $4,8,12,16,20,...$

Multiples of $5$ are $5,10,15,20,...$

LCM of $4,5$ is $20$.

Hence, LCM of $4,5$ is $20$.