Posted by dell on Sunday, September 30, 2012 at 2:22pm.
2 + 6 + 14 = 22
Add the negative numbers and take it from there.
how about writing it like this:
(2-4) + (6-8) + (10-12) + .... + (98 - 100)
the value of each bracket is -2 and you have 50 such brackets, so .....
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