Ingeniously designed mathematical riddles to delight armchair—and seasoned—mathematicians, in high school and beyond.In The Price of Cake, brothers Clément and Guillaume Deslandes have assembled a uniquely rich and accessible collection of mathematical riddles, organized by difficulty and accompanied by unique hand-drawn illustrationsThe challenges are exceptional in both their range and their precision. There are no “tricks” here—just good math to test your skills. While any student will be thrilled to encounter fresh presentations of classic conundrums such as Simpson’s paradox, Hilbert''s infinite hotel, Monty Hall’s paradox, and Seven Bridges of Königsberg, seasoned solvers will also appreciate challenging original puzzles using the Axiom of Choice and Conway’s Soldiers problemThe Deslandes’ lucid and elegant solutions offer new insights, as they seamlessly connect the skills applied in each problem to broader theoretical revelations. Moreover, as Fields Medalist Cédric Villani wri