Living Mathematics. Entertaining Algebra

Why is December called December, which means "tenth", although it is actually the twelfth month? How can we calculate how much hair on a person's head grows on average before falling out? Do we really know how to count, or... does it just seem that way to us? Answers to these and many other questions can be found by the reader in the fascinating book by Y. Perelman, "Living Mathematics", where the author collected various mathematical puzzles and riddles, giving them the form of curious short stories. This edition also includes the work "Entertaining Algebra", the aim of which is to "cultivate a taste for algebra in the reader" and to offer them "various problems with unusual plots that stimulate curiosity, entertaining excursions into the history of mathematics, unexpected applications of algebra to practical life."