mezalick wrote:So congrats, and lets see if someone else can find the other two alternatives to make it quicker..
Perhaps there are 4 ways? Is:
Mirror 1st box to get 2. Mirror those 2 to get 4. Mirror those 4 to get 8. Mirror those 8 to get 16. Mirror 1 box to get 17. Mirror 2 boxes to get 19.
one of your two alternatives?
PS. Perhaps, in the interest of teaching rather than just telling, the original step 5 could have been:
5. Your turn: there are at least 3 ways to make 19 boxes from this 1 box