16, 32, 48
They are: 144, 288 and 432
8, 16, 24
144, 288, 432
144, 288, 432
48, 96, 144
8 16 24
48, 96 and 144
80, 160, 240
32, 64, 96
16, 32, 48. Since 16 is divisible by 4. Every multiple of 16 is also a multiple of 4, so I just took the first 3 multiples of 16.
For 16 and 20, 80,160,240 For 30 and 33, 330,660,990