[Bon mots]

I always wondered how the Greeks did mathematics, since Hindu-Arabic numerals weren't introduced to us in the west until the 12th century by Fibonacci.

I know that the Romans used Abacci (a digital counting mechanism, in fact) and transcribed everything using Roman Numerals.

What did the Greeks use?

[DGray]

There were/are other counting and numerical systems in existance. The Greeks used their own alphabetic nuemeral system which they are thought to have adapted from the Egyptians: Greek mathematical systems