1.

In an infinite geometric progression, each term is equal to 3 times the sum of the terms that follow. If the first term of the series is 4, find the product of first three terms of the series? 

Answer»

Let the series be a, ar, ar2 , ar3 ,…. 

According to the question a= 3ar/(1 − r) or r = 1/4.

The series would be 4, 4/4, 4/16,….. and so on. 

The product of first three terms of the series would be 4 x 1 x 1/4 =1.



Discussion

No Comment Found

Related InterviewSolutions