Challenging Mathematical Problems with Elementary Solutions, Vol. I (Volume 1)

Très intéressant, un livre à posséder pour tout amateur d'énigmes. Attention la plupart des problèmes restent inabordables pour les non mathématiciens

Questions are very rare beyond school syllabus. Each question is precious and gives additional knowledge about the subject . But number of questions should be increased. Price of this book is much more as compared to number of questions.

For example the question on ice cream cones and the underlying idea of Bose-Einstein statistics is very clever. I like this book a lot. Be warned, if you're poor at mathematics but enjoy it like myself, this book will be hard but whatever you do don't look at the solutions until you've exhausted every possible solution you can think of or if you're more of a "time" person, spend a minimum of at least 2 hours before you look at a solution, tempting as it is. Treat it like a Putnam or AMC problem.

Excellent. Book as new.

Very interesting.