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Summing square inverses (Posted on 2011-12-25) Difficulty: 3 of 5
Determine the value of :

(1+1-2+2-2)1/2 + (1+2-2+3-2)1/2 +......+ (1+2010-2+2011-2)1/2

*** For an extra challenge, solve this puzzle using only pen and paper.

See The Solution Submitted by K Sengupta    
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  Subject Author Date
SolutionPen and paper solutionJer2011-12-25 17:23:09
Solutionwith the aid of a computerCharlie2011-12-25 14:42:59
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