I’d like to ask the good people of this community that, if you do know the solution or figure it out, that you not share the answer here. Feel free to announce your success, but there’s something to be said for discovering the answer completely unaided, even if it takes years.
It’s embarrassingly obvious once you see it though.
Whaaat?
Isn’t it right parent minus left parent equals the node you pick?
Alternately right parent minus child equals left parent.
Why does it work with digits as well? What math sorcery is this??
21 minus 13 is unfortunately not 7… Unless I’ve misunderstood what you mean?