JEE Main 2021 — Sequences And Series Question with Solution
From: JEE Main 2021 (Online) 25th July Morning Shift
Question
Let Sn be the sum of the first n terms of an arithmetic progression. If S3n = 3S2n, then the value of is :
Choose an option
Show full solutionCorrect option: A
Correct answer
A6
Step-by-step explanation
Let a be first term and d be common diff. of this A.P.
Given, S3n = 3S2n
Now,
Given, S3n = 3S2n
Now,
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This is a previous-year question from JEE Main 2021, covering the Sequences And Series chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.