Question

What’s is the lcm of 3 , 9 and 18

Answer 1

18

Explanation:

LCM(3,9,18)

Least Common Multiple is :

18

Calculate Least Common Multiple for :

3, 9 and 18

Factorize of the above numbers :

3 = 3

9 = 32

18 = 2 • 32

Build a prime factors table

Number of times each prime factor

appears in the factorization of :

Prime

Factor Number

3 Number

9 Number

18 L.C.M

(max)

2 0 0 1 1

3 1 2 2 2

LCM = 2 • 32

Least Common Multiple is :

18