Collection of elementary logic exercises

The goal of this book by N. O. Lossky is to provide tasks and exercises suitable for any logic textbook, to help readers, regardless of their level of preparation, master its basic course. The book contains a variety of logical tasks and exercises on various topics in logic that have not lost their relevance and didactic power to this day. The final chapter presents examples of various proofs and refutations - from proving the equality of angles in an isosceles triangle to proving the immortality of the soul - for independent analysis by the reader. The book will be of interest to a wide range of readers - students and schoolchildren studying logic, teachers, as well as anyone interested in logic and logical problems.