What is the highest factor of 30 and 45

- What is the highest common factor of 30 and 45
- What is the highest common factor of 30 45 and 60
- What is the highest common factor of 30 45 and 75
- What is the highest common factor of 30 45 and 90
- What is the highest common factor of 15 30 and 45
- What is the highest common factor of 20 30 and 45
- Highest common factor (gcf) of 45 and 30
- What is the highest common factor between 30 and 45
- What is the factor of 3