A rope burns non-uniformly for exactly one hour. How do you measure 45 minutes, given two such ropes?
Fill the squares with numbers 1-8 such that no two consecutive numbers are placed next to each other in any direction vertically, horizontally or diagonally.
The forgetful scientist changed his password, but wrote a list of hintson a sticky note to help him remember what it was. Can you figure out his password?