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The sum of the first 1000 positive integers is:

A500500
B550000
C505000
D500050
Answer & Solution
Correct answer: A. 500500
1. Pair 1 with 1000, 2 with 999, and so on. 2. There are 500 pairs of 1001. 3. The sum is 500500. _Source: syllabus Mathematics, Chapter 5, Arithmetic Progressions._
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