SE-SKOLORNAS 2001 Problem 1
Show that if we take any six numbers from the following array, one from each row and column, then the product is always the same:
4 6 10 14 22 26 6 9 15 21 33 39 10 15 25 35 55 65 16 24 40 56 88 104 18 27 45 63 99 117 20 30 50 70 110 130
Dataset text AI-MO AoPS. Quoted with source.
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