Mathegoras

Sequences and series › Finite sums › Alternating sums

Alternating sum of integers up to 2007

Middle school · ●○○○○ 10 pts

Find the value of 1−2+3−4+⋯+2005−2006+20071 - 2 + 3 - 4 + \cdots + 2005 - 2006 + 2007.

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