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One triplet out (Posted on 2015-06-16) Difficulty: 3 of 5
Given set of fifteen integers (1 to 15) .

Erase 3 numbers so that remaining integers can be arranged as a 3 by 4 array in which the sum of the numbers in each row is a certain Sr and in each of the columns a certain Sc.

Present the triplet you have chosen and one of the possible arrangements.

D4. Bonus question:
How many distinct solutions are there?

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
a chosen tripletDej Mar2015-06-16 18:02:23
Solutioncomputer solutionCharlie2015-06-16 15:05:58
Here's oneJer2015-06-16 13:27:52
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