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Calculate $S_{8}$ when $a_{1}=8$ and $r=… | ClassNotes
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Sep 18, 2022
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Calculate $S_{8}$ when $a_{1}=8$ and $r= -\frac{1}{2}$
Difficulty: Easy
A:
$-\frac{25}{2}$
B:
$\frac{85}{16}$
C:
$\frac{55}{8}$
D:
$-\frac{95}{32}$
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ID: 63273dbaca83163ac3a12d41
