Recently, my friend tested me on a puzzle. The puzzle goes like this, if there is 8 balls (1 of them which weighs either lesser or heavier), how are you going to find out which is the different ball using a two sided weight scale with 3 tries? This is a pretty easy puzzle which everyone would solve given enough time. After giving it some thought, I realized I can not only find which is the different ball with 3 tries but also tell whether it is heavier or lighter then the rest. How do I do it?