(|+3+5+7+···+2013)—(2+4+6+8···)=?
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(|+3+5+7+···+2013)—(2+4+6+8···)=?(|+3+5+7+···+2013)—(2+4+6+8···)=?(|+3+5+7+···+2013)—(2+4+6+8···)=?(
(|+3+5+7+···+2013)—(2+4+6+8···)=?
(|+3+5+7+···+2013)—(2+4+6+8···)=?
(|+3+5+7+···+2013)—(2+4+6+8···)=?
(1+3+5+7+······+2013)-(2+4+6+8+····+2012)
=1+(3-2)+(5-4)+······+(2013-2012)
=1+1+······+1
=1007
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(|+3+5+7+···+2013)—(2+4+6+8···)=?
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