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 #54: New year, new numbers
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From New Scientist #3524, 4th January 2025 [link] [link] (a) Using the
numbers 2, 0, 2 and 5 exactly once each, and the operations of addition,
subtraction...