Saved Bookmarks
| 1. |
40. The sum of 1-1+1-1+1-1.. toeven number of terms is-zero\begin{array}{l}{\text { (1) } 2} \\ {\text { (2) }} \\ {\text { (3) }-1} \\ {\text { (4) }+1}\end{array} |
| Answer» | |