SOLUTION: Compute 1 - 2 + 3 - 4 + ... + 2005 - 2006 Thanks!

SOLUTION: Compute 1 - 2 + 3 - 4 + ... + 2005 - 2006 Thanks!

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Question 1036462: Compute
1 - 2 + 3 - 4 + ... + 2005 - 2006
Thanks!
Answer by Aldorozos(172) (Show Source): You can put this solution on YOUR website!
1-2=-1
3-4=-1
5-6=-1
.
.
2005-20056=-1
Here we have (2006/2)*(-1)= -1003
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