# How do you find the sum of the infinite geometric series #Sigma (0.4)^n# from n=0 to #oo#?

##### 1 Answer

May 2, 2017

#### Explanation:

Where

Here, since

#sum_(n=0)^oo(0.4)^n=1/(1-0.4)=1/0.6=1/(3//5)=5/3#