Question

Find the sum of the geometric series.
14-7+(7/2)-(7/4)+ . . .

Answer 1

8.75

Answer 2

That's what I got too but the choices are
A. 7007/13
B. 28/3
C. 5005/7
D. 2002

Answer 3

@hedyeh99 @electrokid

Answer 4

Sum of an infinite GP is given by,
\[S_n = a / (1-r)\]

Here common ratio is -1/2... first term a=14...

YOU FORGOT THE (-) SIGN OF THE COMMON RATIO... Option (b) is the correct one...

Answer 5

@touseii45 i am not sure :( I am not good with geometric series and sequences

Answer 6

@saloniiigupta95 Thank you . . .
@touseii45 Thanks :)
@hedyeh99 Thank you for taking a look anyways :)

Answer 7

Pleasure :-)

Answer 8

Welcome ^_^