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 #47: Squares and circles
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From New Scientist #3518, 23rd November 2024 [link] [link] A circle is
drawn so it touches the sides of a square, and then the largest square that
fits is ...
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