This document contains math riddles, trivia questions, jokes and information about mathematicians René Descartes, Adrien-Marie Legendre, Blaise Pascal, and Charles Hermite. It includes 3 riddles with answers, 3 trivia questions with answers, 2 jokes with answers, and biographies of the 4 mathematicians and their contributions to mathematics such as analytical geometry, least squares method, probability theory, and elliptic functions.