In this chapter, we studied the Egyptian, Chinese, Roman, Babylonian, Mayan, and Greek numeration systems in addition to our own Hindu-Arabic number system. Please research and respond to at least two of the following topics: Which systems do/don’t have a symbol for ‘zero’? If the system has a symbol for zero, what is it? What is the history of the development of our Hindu-Arabic symbol ‘0’ for zero? Why is it important to have a symbol for zero? What confusion could arise in systems which don’t have a symbol for zero? Please explain and give an example.