JEE Main 2019 — Sequences And Series Question with Solution
From: JEE Main 2019 (Online) 12th January Morning Slot
Question
The product of three consecutive terms of a G.P. is 512. If 4 is added to each of the first and the second of these terms, the three terms now form an A.P. Then the sum of the original three terms of the given G.P. is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B28
Step-by-step explanation
Let terms are
= 512 a = 8
24 =
r = 2, r =
r = 2(4, 8, 16)
r = (16, 8, 4)
Sum = 28
= 512 a = 8
24 =
r = 2, r =
r = 2(4, 8, 16)
r = (16, 8, 4)
Sum = 28
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This is a previous-year question from JEE Main 2019, 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.