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Hardest Math Riddle

Author: casarelolz2004

Riddle:

What goes knock, what goes knock, what goes knock knock, what goes knock knock knock. what goes knock knock knock knock knock, what goes knock knock knock knock knock knock knock knock 

Answer:

Fibonacci at the door.

Rated 3/5 based on 79 votes
Hardest Math Riddle Riddle Meme.
Hardest Math Riddle Riddle Meme with riddle and answer page link.
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