The answer to the riddle is a piano. A piano has many keys, which are the black and white keys used to produce music, but it cannot open any doors as they serve a different purpose entirely. This play on words highlights the difference between literal and figurative meanings of "keys."
Piano
donkey and monkey
Open the keys with the door.
The thing that has 88 keys but cannot open a single door is a piano. The 88 keys refer to the total number of keys on a standard piano, which includes both the white and black keys. These keys produce musical notes rather than serving any function related to unlocking doors.
a piano
A piano has many keys but cannot open a single door. Each key produces a different musical note, showcasing the instrument's ability to create music instead of unlocking physical barriers. This riddle highlights the playful nature of language and the various meanings words can have.
A piano.
a piano
A Piano
Keyboard
Mon-keys Don-keys Piano keys
A piano.