$\sum_{n=1}^{\infty}\left(-\frac{3}{7}\right)^{2n}=\space?$

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$\sum_{n=1}^{\infty}\left(-\frac{3}{7}\right)^{2n}=\space?$

E

Editor

Sep 18, 2022

\sum_{n=1}^{\infty}\left(-\frac{3}{7}\right)^{2n}=\space?

Difficulty: Easy

A:

\frac{9}{40}

B:

\infty

C:

0

D:

\frac{3}{7}

View Solution Steps

ID: 63273dbaca83163ac3a12c21