Count the spots around 3s and 5s, that is those faces of the dice with a central spot and surrounded by 2 spots (on a 3) or 4 spots (on a 5). Add them up. That's it. Supposedly, Bill Gates took 90 minutes to suss this puzzle but that may be an urban myth. I'm no genius but I got it in about a minute! Spotting patterns is a handy ability when you are debugging.
Some new articles added this week.
Have a great week!