Guesstimation: Solving the World's Problems on the Back of a Cocktail NapkinGuesstimation is a book that unlocks the power of approximation it's popular mathematics rounded to the nearest power of ten The ability to estimate is an important skill in daily life. More and more leading businesses today use estimation questions in interviews to test applicants' abilities to think on their feet. Guesstimation enables anyone with basic math and science skills to estimate virtually anything quickly using plausible assumptions and