Finally! I just finished reading through the entire thread.
Hi, everybody I’m new to the CR. I actually just registered so I can try and stump you guys (i.e. Dr. Pepper).
Here goes.
You have 12 balls that look and feel identical but one of them is a slightly different weight. You don’t know if it is heavier or lighter. By using a balance (not a scale) only three times, how can you tell which one is different?
P.S. This is my all time favorite riddle.