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OOO3= one out of three (Posted on 2010-11-04) Difficulty: 4 of 5
Given an equation x^2+y^2+z^2=2010.
1. Prove that in every triplet of integers satisfying the above equation one number has to be even and two others odd.
2. How many integer solutions are there ?


Warning: 1 is very easy, 2 is quite tricky.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
re(3): solutionsbroll2010-11-05 11:40:46
re(2): solutionsCharlie2010-11-05 10:51:40
re: solutionsbroll2010-11-05 02:53:01
re(3): Tricks or Treats?brianjn2010-11-05 01:41:45
re(2): Tricks or Treats?ed bottemiller2010-11-04 19:49:42
re: Tricks or Treats?Charlie2010-11-04 18:46:28
SolutionsolutionsCharlie2010-11-04 18:44:03
Tricks or Treats?ed bottemiller2010-11-04 17:16:34
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