LCM( 2, 4 ) = 4
Write down multiples of each number until you find the first common multiple:
The multipliers of 2 are: 2, 4, 6, . . .
The multipliers of 4 are: 4, 8, . . .
We can see that:
LCM( 2, 4 ) = 4
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.