Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
This book is a compilation of math puzzles that appeared in British newspapers in the early 20th century. The quizzes are just as challenging, entertaining, and addictive now as they were a century ago. It is hard to put this book down. Some of them are easy but many will challenge even the best math buffs. It’s a fun and sizable collection of 430 of the best puzzles of the time.