I only scored a 29, but I laughed when I read the question about making a model of a dodecahedron, because I did at age 12 or so. That got me to complete the test and to feel that some of the questions were indeed designed with me in mind. :-)
23 and in my first semester as a math grad student (coming from a non-math background). I can already see myself heading down the path to a higher score. On a related note, I became a member of the AMS today... that should count for something :)
It's slang from Cambridge University (and maybe elsewhere, but that's where I encountered it) for a student studying mathematics. Related: 'NatSci' (pronounced natskee) for someone studying Natural Sciences (the course that covers all the traditional physical and biological sciences); 'CompSci' (pronounced compskee) for people studying Computer Science.