+0  
 
0
45
2
avatar

The sum of the first $n$ terms in the infinite geometric sequence $\left\{\frac{1}{4},\frac{1}{8},\frac{1}{16},\dots \right\}$ is $\frac{63}{128}$. Find $n$.

 Sep 16, 2021
 #1
avatar
0

The value of n is 5.

 Sep 16, 2021
 #2
avatar
0

There are 6 terms adding up to 63 / 128 as follows:

 

1 / 4 , 1 / 8 , 1 / 16 , 1 / 32 , 1 / 64 , 1 / 128 , >>Number of terms = 6>>Total Sum == 63 / 128

 Sep 16, 2021

8 Online Users

avatar
avatar