I hope I'm wrong but I have a feeling this may be one of those maths/science threads I put a good 20-30 minutes into but then never get the extra info I need or any other feedback
You may be right FF, I started with 123456789 (assuming no zeros although that does seem illogical) and then did a bit of trial and all error and then gave up, there must be some rules that would limit the trials. Of course in the old days I would have written a simple program in Basic and run it on my BBCB :-)
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