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What is the first step of the second step to prove that Sn arrow 1+2+3+..+n=n(n+1)/2?
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What is the first step of the second step to prove that Sn arrow 1+2+3+..+n=n(n+1)/2?

User Eran Katsav
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1 Answer

6 votes

Answer:

I'm pretty sure it's, "verify that Sn is valid for n=1". I think... lol.

Explanation:

User Dharmesh Hadiyal
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