The GCF is 3.
The GCF is 15.
3 is a factor of 12 & a factor of 15, so it's a common factor between 12 & 15. Also, as it's the only common factor between them, in addition to 1 of course, it's the highest common factor between 12 & 15.
Factors of 15: 1 3 5 15 Factors of 24: 1 2 3 4 6 8 12 24 The highest common factor of 15 and 24 is 3
1 and the highest common factor is 15
The GCF is 1.
Factors for 15: 3, 5 Factors for 36: 2, 3, 4, 6, 9, 12, 18 Highest common Factor: 3
It is 15
The highest common factor of 15 and 45 is 15
The highest common factor is 5
The greatest common factor of the numbers 63 and 15 is 3.
The highest common factor of the four numbers is 1.
The highest factor is 3.