The sum of first four terms of a GP is #30# and that of last four terms is #960#. If the first and the last term of the GP is 2 and 512 respectively, find the common ratio.?
1 Answer
Jul 28, 2018
Explanation:
Suppose that the common ratio (cr) of the GP in question is
term is the last term.
Given that, the first term of the GP is
Given,
We also know that the last term is
Now,