JEE Main 2021 — Sequences And Series Question with Solution
From: JEE Main 2021 (Online) 22th July Evening Shift
Question
Let Sn denote the sum of first n-terms of an arithmetic progression. If S10 = 530, S5 = 140, then S20 S6 is equal to:
Choose an option
Show full solutionCorrect option: A
Correct answer
A1862
Step-by-step explanation
Let first term of A.P. be a and common difference is d.
..... (i)
...... (ii)
From equation (i) and (ii), a = 8, d = 10
..... (i)
...... (ii)
From equation (i) and (ii), a = 8, d = 10
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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.