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Question #cbcea

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May 21, 2017

$S_{16} = - 232$ $S_16=-232$

Explanation:

We have $a_n=8,5,2...$ where $a=8$ and $d=-3$

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

$S_16=16/2(2(8)+(-3)(16-1))=-232$

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