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May 25th, 2019, 05:46 PM   #1
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Question Unique Sums

I have a problem that has been on my mind for years but I have not been smart enough or patient enough to think it through.
I want a set of numbers such that any subset of numbers chosen and then successively added or subtracted from a running total would be decipherable solely from the end total. or in other words given the set, by examination of a sum total one could deduce the subset used to obtain the total.

does this make any since at all? I have a feeling that the set has something to do with prime numbers but I am not 100% sure
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