How to find the common ratio of geometric sequence when the sum of 5th term to 8th term is twice the first four terms?
2 Answers
The common ratio is
Explanation:
Let the first term be
and the common ration
The geometric sequence is
Therefore,
So,
Explanation:
Let the Geom. Seq. be
be the sum of its first
We have,
From what is given, we find,
Since,
As respected George C. Sir has rightly pointed out,