@TeacherBowTie It's worth using more #HashTags so people can do a "semantic search":

#Teacher #FurtherMaths #Puzzles #Geometry #GeometricPuzzles and so on.

People don't use them much, so searches don't turn up much yet, but as time goes by I hope they will, and they will.

Meanwhile ... see if you can find all the integer solutions to:

\( 𝑛!+8=2^k \)

And welcome!