The conversation between human and AI assistant.
Which country's number system is the oldest and most organized?
I see. Are there any other notable number systems that have been used throughout history?
Yes, there have been many different number systems used throughout history, including the Babylonian system, which used base-60, and the Mayan system, which used base-20. However, neither of these systems is still in widespread use today. The Roman numeral system, which was used by the ancient Romans, is still used in some contexts, but it is generally considered less organized than the Hindu-Arabic system.