60,120,180 and multiples of 60
60, 120, 180 and so on.
Zero and twelve don't have any common multiples.
1
Assuming you are talking about starting at three, the next four multiples are six, nine, twelve and fifteen.The answer depends on next after what!
if they have no obvious common factors (such as 3!!!!!!!) then you multiply them to get the GCF.
The Least Common Multiple (LCM) for 12 15 is 60
36, 72, 108
(improved by:hoseyjames35) answer:192
84, 168, 252
15,30,45,60,75,90,105,120,135,150,165,180,195,210
multiples of 10- 10,20,30,40,50,60.... Multiples of 12- 12, 24, 36, 48, 60..... Answer-60
12, 24, 36, and the fourth one is 48