Question

What's the lcm of40,60,80 by prime factorisation method

Answer 1

Answer:

240

Step-by-step explanation:

prime factors of 40 = 2 x 2 x 2 x 5

prime factors of 60 = 2 x 2 x 3 x 5

prime factors of 80 = 2 x 2 x 2 x 2 x 5

LCM = 2 x 2 x 2 x 2 x 3 x 5

= 240.