(adsbygoogle = window.adsbygoogle || []).push({}); Find the sum of [itex]\Sigma[/itex] 200 r=5 5r-2

Sn = n/2 [2a + (n-1)d ]

I used S 200 and I got about 101400 but then when I verified on my calculator it was 100058, my calculator has the sigma notation for working out the sum of , how do you get 100058?

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# Homework Help: Sum of problem

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