This riddle asks: what can you make bigger by taking away from it? That sounds impossible at first because removing something usually makes an object smaller, not larger.
The answer is a hole. When you remove more dirt, soil, or material from a hole, the empty space becomes larger. You are taking something away, but the hole itself grows in size.
The trick is that the riddle is not asking about a solid object. It is asking about an empty space. That reversal is what makes the answer clever. The more material you remove from around the hole, the bigger the hole becomes. It is a simple logic riddle that rewards thinking about what is missing rather than what is physically there.
