The greatest common factor (GCF) of 30, 48, and 60 is: 6
Factors for 30: 1, 2, 3, 5, 6, 10, 15, 30
Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24
Factors of 60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30
The common factors between them are 1, 2, 3, and 6, but 6 is the greatest.