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What is the sum of the geometric sequence 1,3,9, ... if there are 13 terms​

User NCore
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1 Answer

3 votes

Answer:

The answer is 797,161

Explanation:

This one is fairly easy if tedious.

How do you get from to 3 from 1? (multiply 1 by 3).

How do you get to 9 from 3? (multiply 3 by 3).

Then simply multiply each successive result by 3 until you have 13 results. Then add those 13 results.

User Rony
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