Question

How do you find the Least common multiple of `10, 4, 18`?

Answer 1

`LCM(10;4;18)= 180`

Explanation:

Factorize the three numbers:

`10 = 2*5`
`4=2^2`
`18=2*3^2`

The least common multiple is the product of all prime factors present in at least one number, taken once with the highest exponent:

`LCM = 2^2*3^2*5 =4*9*5=180`