I've turned comments off on this blog as I'm getting quite a lot of spam. I've been able to keep on posting on flickr but haven't the time and energy to manage to be an active blogger. Sorry not to have been visiting your blogs.
My best wishes to you all!
Update: Comments are back on and I'm back!
BrainTwister #13: Number Venns
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From New Scientist #3484, 30th March 2024 [link] [link] Numbers 1–30 are
put in circle A if they are part of group A, in circle B if they belong to
group B...
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