Want to learn one of the main secrets of alchemy? In his book, Yakov Isidorovich Perelman, a famous mathematician and popularizer of science, will tell you about a magical puzzle that, according to ancient beliefs, brings good luck and can...
avert misfortune. And it's also a great workout for the mind! Learn the rules of magic squares and try to create them on your own.
Want to learn one of the main secrets of alchemy? In his book, Yakov Isidorovich Perelman, a famous mathematician and popularizer of science, will tell you about a magical puzzle that, according to ancient beliefs, brings good luck and can avert misfortune. And it's also a great workout for the mind! Learn the rules of magic squares and try to create them on your own.