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.
The first six multiples of four are 4, 8, 12, 16, 20 and 24. For them to be common, they need to be compared to another set of multiples.
The first four multiples of 4 are 4, 8, 12 and 16.
For them to be common, they need to be compared to another set of multiples.
48, 96, 144
The Least Common Multiple (LCM) of 16 and 32 is 32. The other common multiples of 16 and 32 are all multiples of 32, i.e. 32, 64, 96, 128, 160, 192, 224, etc.
144
The firt three multiples of 8 are 8, 16 and 24.
Multiples of 2 are 2, 4, 6, 8, 10, 12, 14, 16, 18, . . . Multiples of 8 are 8, 16, 24, 32, 40, 48, 56, 64, 72, . . .
The first five multiples of 4 are 4, 8, 12, 16 and 20. For them to be common, they need to be compared to another set of multiples.
16, 32, 48
48, 96 and 144
8 16 24
400, 800, 1200
They are: 144, 288 and 432
8, 16, 24
144, 288, 432
144, 288, 432
48, 96, 144
32, 64, 96
80, 160, 240
For 16 and 20, 80,160,240 For 30 and 33, 330,660,990