1 2 3 4 5 6 7 8 9 that's it!
Hindu
no comment ;;;;
Counting
meteric system
the Mayan number system is called the Hieroglyphics, they thought that zero counted as a number, so they put that zero into the counting system... i hope this answer helps
Babylonians
Decimal.
Roman numerals
The Mayans
There really isn't just one formula for card counting. I wouldn't even say its a formula, its more of a system. If you want a basic system for card counting i would Google "hi/low card counting system". That's probly the easiest one to start off with. Good luck man
Ethiopian pebble counting is much like using multiplication.
dauddeg saith (decimal system, i.e. counting by tens)orsaith ar hugain (vigesimal system, i.e. counting by twenties)