New mathematical library

It is about the beautiful segment of mathematics,namely,combinatorics,which teaches how to reduce an apparently (ugly)cumbersome problem of counting to a fascinating and easier one.*^^Let's read it to have a 'serious FUN'.

"Solving these riddles is not simply a matter of logic and calculation, though these play a role. Luck and inspiration are factors as well, so beginners and experts alike may profitably exercise their wits on Gardner's problems, whose subjects range from geometry to word play to questions relating to physics and geology. We guarantee that you will solve some of these riddles, be stumped by others, and be amused by almost all of the stories and settings that Gardner has devised to raise these questions."--Back cover.