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 #82: Flipping coins
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From New Scientist #3552, 19th July 2025 [link] [link] Position two coins
in a row, one on the left and the other on the right. Each move, you may do
one o...