JEE Main 2026 — Sequences and Series Question with Solution
JEE Main 2026 (21 January Shift 1)
Question
Let and for . Then is equal to .
Enter your answer
Show full solutionCorrect answer: 2
Correct answer
2
Step-by-step explanation
Let .
.
Simplifying: .
So is GP with ratio .
, so .
.
.
.
Simplifying: .
So is GP with ratio .
, so .
.
.
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Sequences and Series chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2026, 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.