Question

The finite geometric sequence has 10 terms. The sum of all terms with even index is 682 and the sum of all terms with odd index is 1364. Determine the first term. Please also state what does "index" refer to in the question?

Answer 1

First term=1024

Common ratio = ½

Explanation:

Index means its position

Even index means the 2nd, 4th, 6th ....terms