In an infinite GP, each term is equal to 7times the sum of the terms that follow it. What is the common ration of the progression?? Ans= 1/8.. explanation plzz

Question

Answer 1

Let the G.P. be a, a*r, a*r^2 and so on till infinity.
Given, a = Sum of the infinite terms starting from a*r
Therefore a = 7 [a*r / 1-r]
'a' will get cancelled on both sides. Solve for 'r'.
r = 1/8

Answer 2

Let the G.P. be a, a*r, a*r^2 and so on till infinity.
Given, a = Sum of the infinite terms starting from a*r
Therefore a = 7 [a*r / 1-r]
'a' will get cancelled on both sides. Solve for 'r'.
r = 1/8

Welcome to Adda

Verify Phone Number using

Verify Phone Number

Welcome to Adda

Trending

In an infinite GP, each term is equal to 7times the sum of the terms that follow it. What is the common ration of the progression?? Ans= 1/8.. explanation plzz