What Am I? Teeth but No Bite
Read the puzzle
Three clues describe one object. Clue 1: "I have teeth but never bite." Clue 2: "I open what is shut." Clue 3: "I live on a ring." The options are A: comb, B: saw, C: door, D: key. Which object fits all three clues?
Which object fits all three clues?
A comb and a saw have teeth too. Check clues 2 and 3.
Key
It has teeth that never bite, opens what is shut and lives on a key ring: D.
How to solve it
Go clue by clue and cross out what fails.
Clue 1 keeps the comb, the saw and the key, since all three have teeth. The door has none, so it goes, even though it is linked to opening.
Clue 2 removes the comb, which opens nothing, and the saw, which cuts rather than opens. A key opens a locked door or box.
Clue 3 confirms it: keys are kept together on a key ring.
The trap is the comb or the saw, chosen on the first clue alone. A saw's teeth do cut, which is close to biting, and neither object fits clues 2 and 3.
Takeaway: check every clue against your pick; the first clue is often the one that fits the most options.
Learn the method: Process of Elimination in Puzzles: Rule Out Until One Is Left
