Like a good challenge? Try these problems provided at the NCTM 2011 Annual Meeting. A new set of puzzles will be made available at the Illuminations booth (#422) each morning. People can work singly or in teams consisting of up to three people. Puzzlers turned in their answers at the Illuminations booth by 2:30 pm that day. The entry with the highest score won a prize.
Ready to try your hand? Need some help in finding a solution? See below (all files are PDFs).