A G.P. consists of an even number of terms.

A G.P. consists of an even number of terms. If the sum of all the terms is 3 times the sum of the odd terms, then find its common ratio.

Solution:

(i) How many terms of the G.P. 3, 3², 3³, … are needed to give the sum 120?
(ii) How many terms of the G.P. 1, 4, 16, … must be taken to have their sum equal to 341?

Solution:

More Solutions:

• Evaluate the geometric Progression.
• Find the sum of the series.
• Find the sum of the following series to n terms:
• The list of numbers – 10, – 6, – 2, 2, … is
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• The 4th term from the end of the A.P. -11, -8, -5, …, 49 is