JEE Main 2021 — Sequences And Series Question with Solution
From: JEE Main 2021 (Online) 26th February Morning Shift
Question
In an increasing geometric series, the sum of the second and the sixth term is and the product of the third and fifth term is 25. Then, the sum of 4th, 6th and 8th terms is equal to :
Choose an option
Show full solutionCorrect option: D
Correct answer
D35
Step-by-step explanation
a, ar, ar2, .....
.... (1)
.....(2)
On dividing (1) by (2)
(an increasing geometric series)
.... (1)
.....(2)
On dividing (1) by (2)
(an increasing geometric series)
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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.