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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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spoiler(spread sheet) | Comment 1 of 4

 

              sol:

(1,1,22),<br>

(1,2,11),<br>

(2,2,7),<br>

(2,3,5),<br>

Edited on June 7, 2010, 11:56 am
  Posted by Ady TZIDON on 2010-06-07 11:49:37

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