defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Sequences and Series Special Series
What is the value of \({1\over2!}+{1\over4!}+{1\over6!}+\ ...\ \infty\)?
1
e2
2
\(\rm{e\ -\ e^{-1}\over2}\)
3
\(\rm{e\ +\ e^{-1}\over2}\)
4
None of these.