Numbers have been a fact of life throughout recorded history

One, two, three, four, five, six,seven, eight, nine, and zero.With just these ten symbols, we can write any rational number imaginable.But why these particular symbols?Why ten of them?And why do we arrange them the way we do?Numbers have been a fact of life throughout recorded history.Early humans likely counted animals in a flock or members in a tribe using body parts or tally marks.