What is a possible value for the missing term of the geometric sequence?
1, 250,_, 50,...

Question

What is a possible value for the missing term of the geometric sequence? 
1, 250,_, 50,...

anonymous · Answer

@agent0smith

***[isuru]*** · Answer

let's assume that the missing term is "x"
       then if the common ration is "r"
then
  250*r = x
also 
     x*r = 50
         r = 50/x
substitute it in the first one
 250*(50/x) = x
  x^2 = 1250
         = nearly .. 111.8

got it :) ?

***[isuru]*** · Answer

srry the last part should be  corrected as this
             x^2 = 12500
               x = 111.8

anonymous · Answer

why does it go up and back down? I'm confused by this question

anonymous · Answer

@***[ISURU]***

anonymous · Answer

111.8 isn't one of the answer choices...
these are the choices:
1200
650 
250
125