What is the difference between the sum of the first 2003 even counting numbers and the sum of the first 2003 odd counting numbers?
Question:
What is the difference between the sum of the first 2003 even counting numbers and the sum of the first 2003 odd counting numbers?
Answer:
Let's think step by step.

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2003
What is the difference between the sum of the first 2003 even counting numbers and the sum of the first 2003 odd counting numbers?
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