Question

how to do it?what is the lcm?​

Answer 1

Answer:

900

Lcm= 180

Step-by-step explanation:

6 = 2*3

9 = 3*3

15 = 3*5

20 = 2*2*5

Lcm = 180 = 2*2*3*3*5

Clearly we need 5 more .

So 900 is answer .