kisi ka apna hone or manne me vhi fark hai jo mathmatics me kisi answer ko lane k liye use X mana jata hai phir bad me us X ki value khtm ho jati hai kyoki use tb tk k liye hi mana gya tha jb tk apna kam na ho jaye iska mtlb thi h ki koi kisi ko apna man to skta hai Lekin apna bna nhi skta value dikhave ki ho gyi hai