Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Let S n denote the sum of first n terms of an A.P. If S 2n = 3 S n then S 3n /S n is –
Text Solution
Verified by ExpertsThe correct answer is:
B
Put n = 1 → S 2 = 3S 1
∴ T 1 = S 1
& T 2 = S 2 – S 1 = 2S 1 = 2T 1
∴ AP is : T 1 , 2T 1 , 3T 1 , 4T 1 ….
∴ 
= 
= 
= 6
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…