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What is 1+2+3+4+...+1000?
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4 votes
What is 1+2+3+4+...+1000?

User Kiko Carisse
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1 Answer

2 votes

Answer:


S_(1000)=500500

Explanation:


\displaystyle S_n=(n(a_1+a_n))/(2)=(1000(1+1000))/(2)=500*1001=500500

User Jschools
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