Editor
Editor
 Sep 18, 2022
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$\sum_{n=1}^\infty (-e)^{-2n}$
Difficulty: Easy
A: 
0
B: 
$\infty$
C: 
$(e^{2}-1)^{-1}$
D: 
$e^{2}$
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NETNUST Entry TestMathematicsSequence and Series