In this lesson, we will learn how to find the sum of an infinite geometric series.

Q1:

Find the sum of an infinite geometric sequence given the first term is 171 and the fourth term is 1 7 1 6 4 .

Q2:

Find the sum of an infinite number of terms of the geometric sequence starting at with term .

Q3:

Find how many terms should be taken from the geometric sequence 5 8 4 , − 5 8 4 7 , 5 8 4 4 9 , ⋯ starting from the second term to make the sum − 7 3 .

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