three and a half years ago the average age of family of 3 members was 12 and half years then.including a baby the present average age is still same today .how old is baby now?
Pure mathematics is the world's best game. It is more absorbing than chess, more of a gamble than poker, and lasts longer than Monopoly. It's free. It can be played anywhere - Archimedes did it in a bathtub.