What is a LCM?

Question

What is a LCM?

pooja195 · Answer

LCM=Least common multiple 
It means of the multiples of a number the smallest one is the least common multiple

igigighjkl · Answer

I'm confused?

mrnood · Answer

Common multiples are multiples that two numbers have in common. These can be useful when working with fractions and ratios.

Example:
What are some common multiples of 2 and 3?
  Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24...
  Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27...
Common multiples of 2 and 3 include 6, 12, 18, and 24.

Example:
What are some common multiples of 25 and 30?
  Multiples of 25: 25, 50, 75, 100, 125, 150, 175, 200, 225, 250, 275, 300, 325...
  Multiples of 30: 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330...
Common multiples of 25 and 30 include 150 and 300.

The lowest common multiple or least common multiple is the lowest multiple two numbers have in common.

pooja195 · Answer

Read more here :) https://www.mathsisfun.com/least-common-multiple.html

igigighjkl · Answer

thanks all of you!!! :)

calculusxy · Answer

LCM stands for the "least common multiple" 

For instance the LCM of 2 and 4 can be found by
1) listing the multiples of 2 and 4 
2) finding the smallest multiple which is common in both of the lists. 

multiples of 2: 2, 4, 6, 8.... 
multiples of 4: 4, 8, 12, 16....

the smallest multiple in the list which is common in both lists is $\large 4$. Thus the LCM here is $4$.