On Sat, 1 Dec 2012, William Elliot wrote: > On Sat, 2 Dec 2012, Bart Goddard wrote: > > William Elliot <email@example.com> wrote in > > > > > How do we know if a question is a Putnam question? > > > > It'll have the number 2012 in it somewhere. > > "What's 5^2012 mod 7?" is a Putnam question? ;-} > What the heck, just to add some math, I'll solve it, Putnam question or not.