Respuesta :

Given:

[tex]\frac{1}{2},-\frac{1}{4},\frac{1}{8},-\frac{1}{16},\ldots[/tex][tex]\begin{gathered} \text{Common ratio=}\frac{-\frac{1}{4}}{\frac{1}{2}} \\ =-\frac{1}{4}\times\frac{2}{1} \\ =-\frac{1}{2} \end{gathered}[/tex]

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