Well, it's more of help I'm seeking for rather than providing a puzzle to be solved (but who knows, maybe it'll be enjoyable for you to help solve it? :3).Originally Posted byPuzzle

Anyway, I worked out that there are three combinations that would result in a positive answer (i.e. > 0), irrespective of position. Then for each possible combination I worked out how many variations in positioning there would be, as shown below:

So in total, there are 18 possible combinations (7+6+5). Is this answer correct?

EDIT: I'm an idiot, lol =.=