I know number is an abstract object. But I am not satisfied. Let's take number 1 represents any wholesome unit that we consider, say a goat .Then we say number 2 as 2 of that wholesome unit, here 2 goats. My question is how we came to know number 2 as it's definition itself containing number 2 in any other forms like couple, pair etc... ?
My question is so deep and I think I didn't properly expressed in terms of words. Please understand my question.