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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 illustrations. The 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...