I am a common factor of 12 and 60. I am a multiple of 2 and 12. I am greater than 9. What number am I?
Factors of 12: 1, 2, 3, 4, 6, 12
Factors of 60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
Highest common factor of 12 and 60: 12
Multiples of 2: 2, 4, 6, 8, 10, 12
Multiples of 12: 12
Lowest common multiple of 2 and 12: 12
The number is 12.
Answer(s): 12