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Half a dozen of weights (Posted on 2019-01-23) Difficulty: 4 of 5
d3: Select six weights from a set of weights (1, 2, …, 26) grams in such a way that any two subsets of the six add up to distinct total weights.

Bonus-d4: Prove that no similar subset of 7 exists.

Source: Moscow Math Olympiad

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
solns via computerSteven Lord2019-01-23 11:54:08
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