At left, Daniel Greengard '08, Albert Hill '07 and David Pollack, assistant professor of mathematics, work through problems, which were part of the William Lowell Putnam Mathematical Competition held Dec. 2. Posted 12/20/06 During a recent mathematics test, which spanned six hours, Daniel Greengard 08 believes he only got one question completely correct out of 12. But getting only one question correct puts him in the top half of all test-takers, explains David Pollack, assistant professor of mathematics and faculty-advisor for the 67th Annual William Lowell Putnam Mathematical Competition held Dec. 2. The Putnam exam tests originality and technical competence,…