Puzzles

We like puzzles. They are fun, and good for the mind!
Feel free to re-post, as per our CC-BY-SA content license.

For accessibility, we create our puzzles in the open SVG format. This means that vision impaired viewers can play too!
We provide a PNG alternative also, but we do encourage you to use the SVG wherever possible (Google+ is fine with the page and the SVG, Facebook seems to need the PNG) – feedback welcome!

  1. Work out the order of these numbers
  2. What is this cipher composed of?
  3. Find N