Question

Find the sum s = 1 + 1/3 + 1/9 + 1/27 + up to infinity

Answer 1

Answer:

3/2

explains

it is a Gp

in which First term ,a=1

common ratio r=1/3

by

using formula

sum of GP upto infinity=

$s = \frac{a}{1 - r }$

therefore

$s = \frac{1}{1 - \frac{1}{3} }$

S=

$\frac{1}{ \frac{2}{3} }$

=3/2