1.

The sum of the series \[\frac{1}{2\,!}-\frac{1}{3\,!}+\frac{1}{4\,!}-.....\] is [DCE 2002]

A. e
B. \[{{e}^{-\,\frac{1}{2}}}\]
C. \[{{e}^{-\,2}}\]
D. None of these
Answer» E.


Discussion

No Comment Found