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It surprises me to have 16,807 different ways to make the numbers 5-35 using 5 numbers from 1-7. Very poorly articulated by me, this time and last...
Sorry, hadn't bothered to read it when I posted. I did soon after and thought man, I'm such a dick. I read the first bit and thought: I'll address that now, else I might forget!
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There are 16,807 different ways if you consider that order is important; ie 1-2-3-4-5= 15 is different to 5-4-3-2-1 and 1-3-5-2-4, etc. If order is unimportant, then the number is much smaller but I don't know how to calculate that.