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Sum (Pair Product) - Sum = 21 (Posted on 2010-06-07) Difficulty: 2 of 5
Determine all possible triplet(s) (a, b, c) of positive integers, with a ≤ b ≤ c, that satisfy this equation.

a*b+b*c+c*a - (a+b+c) = 21

No Solution Yet Submitted by K Sengupta    
Rating: 2.0000 (1 votes)

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  Subject Author Date
re: Analytical solution (spoiler)Dej Mar2010-06-08 09:30:04
SolutionAnalytical solution (spoiler)Steve Herman2010-06-07 20:35:34
Solutionoverkill solutionCharlie2010-06-07 13:19:11
spoiler(spread sheet)Ady TZIDON2010-06-07 11:49:37
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