If Aryabhatta invented 0 then how do we know that Ravana had 10 heads?

If Aryabhatta invented 0 then how do we know that Ravana had 10 heads? Originally Answered: If Aryabhatta invented 0, then how did we know that Ravana had 10 heads? This is one of the biggest misconception in India. It has created the huge confusion among the Indians. Aryabhatt never invented or discovered zero! He invented a unique symbol for mathematical purpose. Why did he do so? If the concept of zero pre-existed before Aryabhatta, then why does a mere mathematical symbol is so important to us? Actually there are two ways to write numbers. One is symboling form and other is alphabetic form. Before the discovery of zero, people used to represent the numbers largely alphabetically like saying 'ten', 'hundred' and so on. But there was a problem! In symbolic system,after each set of ten number system, we used to use a different set of number whose complexity gradually increases with respect to increase in numerical values like the way in Roman numbers. It was quite dificult to remember the higher order numbers in that way. What Aryabhatt did was to solve this problem was unique and very important. The properties of zero makes the number system a lot easier to cram due to it's simplistic repeadity.