16, 32, 48
They are: 144, 288 and 432
8, 16, 24
144, 288, 432
144, 288, 432
48, 96, 144
8 16 24
400, 800, 1200
48, 96 and 144
The common multiples of 4, 8, and 16 are numbers that are divisible by all three of these numbers. To find the common multiples, we first list the multiples of each number: 4 (4, 8, 12, 16, 20, ...), 8 (8, 16, 24, ...), and 16 (16, 32, 48, ...). The common multiples of 4, 8, and 16 are the numbers that appear in all three lists, which are multiples of the least common multiple of 4, 8, and 16, which is 16. Therefore, the common multiples are numbers that are multiples of 16 (16, 32, 48, ...).
80, 160, 240
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.