1003108712

SubArea: 
Infinite series
Level: 
A
Project ID: 
1003108712
Accepted: 
1
Clonable: 
0
Easy: 
0
The value of the expression \[ \sum\limits_{n=1}^{\infty}(-1)^n\cdot\left(\frac23\right)^n \] is equal to:
\( -\frac25 \)
\( \frac25 \)
\( -\frac23 \)
\( \frac23 \)
\( \frac52 \)