Write down the first 3 common multiples of 4 and 9.
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108
Multiples of 9: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108
First 3 common multiples are 36, 72, 108
Answer(s): 36, 72, 108