- Geometric sequencesChoice D
$r=\frac{26}{-13}=-2$

$\therefore a_6=-13 \times (-2)^{6-1}=416$

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- Geometric sequencesChoice D
$r=\frac{26}{-13}=-2$

$\therefore a_6=-13 \times (-2)^{6-1}=416$

## Skills you are tested for:

Was this explanation helpful?

## Comments