180 Days of Ideas for Discussion in Math Class.
(as of 9July2014, we're in overtime!)
Wednesday, September 17, 2014
253: Half of the blocks have paint
I liked this puzzle, so I included it.
A rectangular wooden block (not necessarily a cube) is painted on the outside and then divided into one‐unit cubes. It turns out that exactly half of the cubes have paint on them. What were the dimensions of the block before it was painted?
So, where do we start?
What information is really being supplied here?