Question

early men used to keep count of their stock by​

Answer 1

Answer:

50,000 years ago

The earliest evidence we have of humans having counting ability are ancient tally sticks made of bone and dating upto 50,000 years ago.

Answer 2

Early humans counted and performed simple calculations using tools such as their fingers, notches in sticks, knotted strings, and pebbles. Most early cultures evolved some form of a counting board or abacus to perform calculations.