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Puzzle ZFND 


??

What are the next three characters in this sequence:

2 · 1 · F · 1 · 1 · F · 0 · 1 · F · 9 · F · ?

Puzzle Copyright © Kevin Stone

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Answer
8 F 7.

This is the sequence F7, F8, F9, F10, F11, F12, written backwards.

Often seen on a computer keyboard.

21F 11F 01F 9F 8F 7F