Q. The sum of the series 5.05 $+ 1.212 + 029088 + ...\infty$ is
A) $6.93378$
B) $6.87342$
C) $6.74384$
D) $6.64474$
Explanation
(d)
Since, it is an infinite GP whose common ratio is 0.24.
$\therefore\ \ S_{\infty} = \frac{a}{1 - r} = \frac{5.05}{1 - 0.24}$
$= 6.64474$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.