Write down the first 3 common multiples of 2 and 9.
Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54
Multiples of 9: 9, 18, 27, 36, 45, 54
First 3 common multiples are 18, 36, 54
Answer(s): 18, 36, 54