MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
| 1. |
If we add first n numbers, we get ______ |
| A. | ( frac{n (n+1)}{2} ) |
| B. | n-1 |
| C. | n<sup>2</sup> |
| D. | n<sup>2</sup>-1 |
| Answer» B. n-1 | |