Keys That Don’t Unlock


It’s something you use every day, makes beautiful sounds, and yet none of its keys will ever open a door. Can you guess what it is before the answer hits you?
created by Niki99
  

 



Brain teaser - Number And Math Puzzle - Keys That Don’t Unlock - It’s something you use every day, makes beautiful sounds, and yet none of its keys will ever open a door. Can you guess what it is before the answer hits you?




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How many people solved this? 1 solved this


There is no hint

A piano