Question

Find the sum of the finite geometric series: 5 + 10 + 20 + ... +81,920.

Answer 1

Answer:

No solution

Step-by-step explanation:

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by  2  gives the next term. In other words,  a n +a1 ⋅ r n -1

Geometric Sequence:  r = 2

The series given has a value of  r  such that r  >  1  or   r  <  −  1. Therefore, the infinite sum cannot be calculated.