Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The ratio of the sum of n terms of the two A.P's. be 
and ratio of 11th term is λ then value of 111 × λ is-
Text Solution
Verified by ExpertsThe correct answer is:
D
Let first A.P. is a 1 , a 1 + d 1 , a 1 + 2d 1 …….
a 1 (first term), d 1 (common difference)
Second A.P. is a 2 , a 2 + d 2 , a 2 + 2d 2 ……
a 2 (first term), d 2 (common difference)
Given is 
= 
⇒ 
= 
Put 
= 10 or n = 21 to get
= 
= 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A series whose n th term is , the sum of r terms will be
If , then is
The sum of the series is
The sum of the series 1.2.3 + 2.3.4 + 3.4.5 + ….. to n terms is
The sum of the first n terms of the series 1 2 + 2.2 2 + 3 2 + 2.4 2 + 5 2 + 2.6 2 + . . . is , wh…
An A.P. whose first term is unity and in which the sum of the first half of any even number of term…