3, 6, 9, 12, 15 and just keep adding three till you get to 120.
60,120, 180. 15 x 4 = 60 20 x 3 = 60 15 x 8 = 120 20 x 6= 120 15 x 12 = 180 20 x 9 = 180
105, 120, 135
-105
60, 120, 180
60, 120, 180
40, 80, 120
44
40, 80, 120
They are: 60 120 and 180
120, 240, 360
40, 80, 120 and so on.
120, 240, 360 and so on..