Question

How can I find the sum of the first 1000 positive integers?

Answer 1

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Answer 2

Answer:

500500

Explanation:

Let S= 1+2+3.......+1000

Using the formula An= n/2(a+l) we have,

S= 1000/2+(1+1000)

=500×1001

= 500500

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So the sum of first 1000 positive integers is 500500.

Thank u!