One Hundred Facets of Mathematics

“One Hundred Facets of Mathematics” — the first book in the series “Library of the magazine 'Kvantik'”. This book contains one hundred test problems with detailed solutions, comments, and illustrations. For simplicity, all problems are provided with answer options from which to choose the correct one, but often the correct answer is not the one that comes to mind first. Most of the problems were invented by the author and were offered in various mathematical Olympiads or published in the magazine “Kvantik”. All problems are illustrated with engaging pictures.