3 Tips for Great Question Writing

Figure 1. Tower of Hanoi Puzzle

Count the number of moves required to duplicate the exact arrangement of disks on the first tower and the last tower.

Rules: Only move one disk at a time. You may never place a larger disk on top of a smaller disk.

Hint: Sketch out your strategy versus trying to walk through the steps in your head.

Possible answers: 5, 7, 9 or 11 moves

Most blog posts don’t open with an assignment for the reader. Why have I chosen to do so? And do you even care why, or are you hoping that in the next few lines I will reveal the correct answer? Chances are, if you actually tried out the puzzle above, you want to know the sol…