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Well I have not tried, but here is a technique, may be i am wrong For 6 numbers, total possible numbers are 6! = 720
take half of the the average numbers = 333,333 and other half = 444,444
So the sum can be S = 360 x 333,333 + 360 x 444,444
Try to find out the solution with the first method and compare, may be you get both the answers matched
Cheers
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