Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If each term of a geometric progression 
with 
and 
, is the arithmetic mean of the next two terms and 
, then 
is equal to
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Let 
th term of the GP be 
. Given,
Hence, we get, 
as 
So, 
(Sum upto 20 terms) - (Sum upto 18 terms) 
Putting the values 
and 
;
we get 
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