Penny has announced the winners of the witch contest and my two favourites weren't amongst them... so now I'll never know who did them... unless someone tells me....
my absolute favourite was the dark 68 and my favourite cute one was the tortoise 138.
Anyone know???
Update: the tortoise is by happy d
BrainTwister #116: Curiouser and curiouser
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From New Scientist #3585, 7th March 2026 [link] [link] There is a set of
numbers (sometimes called curious numbers) that, when squared, return the
same set...
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