1. I have a good head for figures.
2. He should go in for accounting because he has a good head for figures.
3. A steeplejack has to have a good head for heights.
4. Have a good head for something.
5. Well, I have a good head for business, but I'm not very creative.
6. In all undertakings you have a good head for managing and controlling.
7. Bill: Jane seems to have a good head for Mathematics.