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 #119: No two 2s
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From New Scientist #3588, 28th March 2026 [link] [link] There are some
numbers whose digits are all 1s or 2s and that don’t contain two 2s in a
row: for ex...
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