This spelling riddle asks: What appears twice in “corner,” once in “room,” never in “house,” and once in “shelter”?
The answer is the letter R.
The word corner contains two R’s. The word room contains one R. The word house contains no R. And the word shelter contains one R.
The clue sounds as if it might describe something found inside different places, but the answer is simply a letter hidden in the words themselves.
These riddles are easiest to solve when you stop thinking about the meaning of the nouns and inspect the spelling instead. Once you count the R’s in each word, every part of the clue matches exactly.
