What are some real-life situations where multi-dimensional arrays might be useful?

If you think, there are many game application where you can use a Multi-dimensional array. If we talk about a game then chess is the first game where rows and columns are used. The Second is the tic-tac-toe game and other board games are there too.

loool i m also trying to figure that out.seems like u should have genius ranking

yes you can very simple, click the heart and then click the follow requests button.