2. How many prime numbers are there?
3. What are the primary colors?
4. What are the secondary colors?
5. What happens when you shine white light through a prism?
6. What percentage of the light spectrum can we see?
7. What does RGB stand for?
8. What does CMYK stand for? How is that different from RGB?
9. What color do you get when you mix red and yellow? blue and yellow? blue and red?
10. What is ultraviolet light?