انگلیسی 1390

366 days of mathematical problems and puzzles and "Thought of the Day' fromuminaries of science. This book is different, it will never get out of date. You can use it day after day, year after year, 24x7 math a day is a book to make mathematics part of ourives. This is not a calendar nor a reference book but a compendium of mathematical information that will give you your math fix every day of the year. Keep abreast with your mathematical aptitude and more. Each day has a thought byuminaries in the field of mathematics to brighten your day. "Believe It or Not' in Mathematics is full of surprises. Math a Day needs you retention day in and day out.