This is a great little book to help discover the excitement of mathematical puzzles. Written by Devi Shakuntala (nicknamed "the human computer") you can now compare your problem solving and arithmetic skills with hers. As this book shows, mathematics is not always hard extremely abstract mind-boggling stuff. In fact it can encompass playful and fun problems. Many famous mathematicians are known to be devoted to puzzle solving of one kind or another. This kind of problem solving play often leads to more significant scientific discoveries. Maybe one of these problems will lead you to such discoveries!
In these notes, provide up-to date detailed solutions to many of the problems posed by Shakuntala. In addition, in the case where it is prudent to do so I implement python (and sometimes R) codes to help in the enumeration of the choices and facilitate finding solutions. Reading these notes and solutions is a good way to learn a bit about the very popular and powerful programming language python. I hope that this book will help you become a stronger problem solver and open your eyes to the possibility of using python as a language to help solve your own problems. People unfamiliar with this book can see what others have said about it on amazon both here and here.You can preview and buy the book here