We have been asked to find the sum of first 1000 positive integers from ML Aggarwal Avichal Publication Arithmetic Progression chapter 9 question no 19 (i)
Sir please give me a detailed solution of this question
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Sum of n positive integers=2n(n+1)
For 1000 integers, n=1000
=21000(1000+1)
=500×1001
=500500