Question 154
Evaluate the sum
$$
1 - 2 + 3 - 4 + \cdots + 2007 - 2008
$$
$$
1 - 2 + 3 - 4 + \cdots + 2007 - 2008
$$
MathNet 2008-part-04 — 165 problems (EN–VI) Question 154
Math Olympiad Vault · MathNet 2008-part-04 — 165 problems (EN–VI)
Math Olympiad Vault · MathNet 2008-part-04 — 165 problems (EN–VI)