[SOLVED] a number series
This is probably quite simple, but for some reason, I am having a problem with it.
Ok, I'm trying to find x in this series of numbers
1 , 1x , 1x^2 , 1x^3 , ..... , 0.2
the sum of all numbers in the series = 5
I would assume the solution has to do with logarithms.
If someone could show me how to find the solution to this, I would greatly appreciate it, thanks.
This is apparently a finite geometric series, so we could apply the sum formula. My problem in solving this is that we don't know the number of elements in the sequence. Are you sure there isn't any more information?
Originally Posted by EcoDTR
That can't be the original problem.
Why all those 1's? . . . and what is that "0.2"? .It doesn't fit.
If the problem was actrually: .
. . we can solve for . . . otherwise, forget it!