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Wolfdog
Requires reading the designer's mind. My solution: 1,5,9,13 (Congruent to 1, mod 4); 2,6,10,14 (congruent to 2, mod 4); 3,7,11,5 (congruent to 3, mod 4); and 4,8,12,16 (congruent to 0, mod 4). Even given your groups, many alternate explanations are possible (for ex., "divisors of 10").
(14 years, 3 months ago)

durkzilla
(14 years, 3 months ago)

durkzilla
I agree with Wolfdog - far too many possible valid combos and some really obscure groupings
(14 years, 3 months ago)

 

 


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