Answer :

The first three terms of a G.P. are:a,ar,ar2


The first six terms of a G.P. are:a,ar,ar2,ar3,ar4,ar5


It is given that the ratio of the sum of first three terms is to that of first six terms of a GP is 125 : 152.


a + ar + ar2 = 125x & a + ar + ar2 + ar3 + ar4 + ar5 = 152x


a + ar + ar2 + r3( a + ar + ar2) = 152x


125x + r3(125x) = 152x


r3(125x) = 152x - 125x = 27x



r = 3/5


Ans:common ratio =


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

The product of thRD Sharma - Mathematics

Express <imRS Aggarwal - Mathematics

If a, b, c are inRS Aggarwal - Mathematics

Express <imRS Aggarwal - Mathematics

Prove that RS Aggarwal - Mathematics

If a, b, c are inRS Aggarwal - Mathematics

The sum of n termRS Aggarwal - Mathematics

If a, b, c, d areRS Aggarwal - Mathematics

Evaluate :
</p
RS Aggarwal - Mathematics

The first term ofRS Aggarwal - Mathematics