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15=5*3 (Posted on 2018-03-01) Difficulty: 3 of 5
The above line represents grouping of the first 15 integers into disjoint subsets of 3 elements, each triplet being an ascending arithmetic progression - each triplet with unique difference.
List all possible groupings into 5 triplets - each grouping with another set of 5 distinct differences.
Order the triplets by the value of the 1st element, like in the example shown.

See The Solution Submitted by Ady TZIDON    
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  Subject Author Date
Solutioncomputer solutionCharlie2018-03-01 15:40:50
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