Thanks for the suggestion. will definitely give it a try. I really liked guesstimation too. https://www.amazon.in/Guesstimation-Solving-World%60s-Problems-Cockt

Thanks for the suggestion. will definitely give it a try. I really liked guesstimation too. https://www.amazon.in/Guesstimation-Solving-World%60s-Problems-Cocktail/dp/0691129495 https://www.amazon.in/Guesstimation-Solving-World%60s-Proble...