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2012 sum Digit (Posted on 2013-04-23) Difficulty: 3 of 5
Find the last digit of the sum

No Solution Yet Submitted by Danish Ahmed Khan    
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Some Thoughts re(2): Grade inflation Comment 4 of 4 |
(In reply to re: Grade inflation by Jer)

Thanks Jer.  Actually, I was wrong about the difficulty.  Apologies to all. 

The problem I solved in under a minute was
    1^2 + 2^2 + 3^2 + ... + 2012^2.
I've got to remember to read the problems more carefully!

  Posted by Steve Herman on 2013-04-23 14:03:47
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