JEE Main 2021 — Sequences And Series Question with Solution
From: JEE Main 2021 (Online) 24th February Evening Shift
Question
The sum of first four terms of a geometric progression (G. P.) is and the sum of their respective reciprocals is . If the product of first three terms of the G.P. is 1, and the third term is , then 2 is _________.
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Show full solutionCorrect answer: 3
Correct answer
3
Step-by-step explanation
Let the terms are
..........(1)
...............(2)
Doing
Also given,
..........(1)
...............(2)
Doing
Also given,
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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.