Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Let 
be in an A.P. such that 
. If 
, then 
is:
Text Solution
Verified by ExpertsThe correct answer is:
C
Given:
This means:
Express each term in A.P.:
The general term of the A.P. is given by 
. Thus, for the odd indices:
Simplify the equation:
Use the formula for sum of an arithmetic series (first 11 terms):
So, the equation becomes:
Solve for the relationship between 
and 
:
So,
… (i)
Second condition:
Combine equation (i) and (ii):
Substitute 
into equation (ii):
Therefore:
Thus, 
.
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