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Verify and prove (Posted on 2017-12-10) Difficulty: 4 of 5
Consider:
      (15 + 25)     +     (17 + 27)     =   2 *(1 + 2)4   
   (15 + 25 + 35)   +   (17 + 27 + 37)   =  2 *(1 + 2 + 3)4 
(15 + 25 + 35 + 45) + (17 + 27 + 37 + 47) = 2 *(1 + 2 + 3 + 4)4
       ...                  ...       and so on     ...

First, verify that both sides are equal for further increase in n,

then prove it.

No Solution Yet Submitted by Ady TZIDON    
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Comments: ( You must be logged in to post comments.)
  Subject Author Date
Some ThoughtsWhy it worksbroll2017-12-10 21:33:38
SolutionClassic inductionJer2017-12-10 19:38:26
statements and referencesxdog2017-12-10 12:30:44
Solutionre: computer verification no proof ... or, come to think about it ...Charlie2017-12-10 10:32:30
Some Thoughtscomputer verification no proofCharlie2017-12-10 10:26:50
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