This clever word riddle asks: What word can you make disappear by adding one letter? The trick is to think about a short word that changes meaning completely when one extra letter is placed in front of it.
The answer is “one.”
Add the letter G to the beginning of “one” and you get gone. In other words, “one” has disappeared because it has become “gone.”
The riddle works through wordplay rather than through spelling difficulty. Most people first search for a long word or try to imagine removing letters, but the solution is much simpler. You only need to add one letter and notice how the new word changes the meaning completely.
So the full trick is: ONE + G = GONE.
