Actually, the total number of integers that are multiples of both 12 and 8 is infinite. Here are the first few: 24, 48, 72, 96, 120, 144, 168, 192, 216, 240 . . .
The first three common multiples of 8 and 12 are 24, 48, and 72.
The first three multiples of 4 are 4, 8 and 12. For them to be common, they need to be compared to another set of multiples.
LCM is 24, but 48 and 72 are also multiples
Common Multiples of 8:8,16,24,32,40,48,56,64,72,80,88 and 96 Common Multiples of 12:12,24,36,48,60,72,84 and 96
4, 8 and 12 are the first 3 common multiples of 2 and 4
24, 48, 72
The first three multiples of 4 are 4, 8 and 12. For them to be common, they need to be compared to another set of multiples.
24, 48, and 72.
120, 240, 360
24, 48, 72
24, 48, 72
What are three common multiples of 2 6 8