How many of the integers between 1 and 1000, inclusive, can be expressed as the difference of the squares of two nonnegative integers?
Question:
How many of the integers between 1 and 1000, inclusive, can be expressed as the difference of the squares of two nonnegative integers?
Answer:
Let's think step by step.

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How many of the integers between 1 and 1000, inclusive, can be expressed as the difference of the squares of two nonnegative integers?
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