In an infinite Geomatric progression ,each term is equal to twice the sum of all the terms that follow it. if the sum of first two terms is 12, the sum of entire progression is
As we learnt in
Sum of infinite terms of a GP -
- wherein
first term
common ratio
Given
Also a+ar=12
4a/3=12
a=9
So,
Option 1)
Incorrect
Option 2)
Correct
Option 3)
Incorrect
Option 4)
Incorrect