JEE Main 2025 — Sequences And Series Question with Solution
From: JEE Main 2025 (Online) 28th January Evening Shift
Question
The interior angles of a polygon with n sides, are in an A.P. with common difference 6°. If the largest interior angle of the polygon is 219°, then n is equal to _______.
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Show full solutionCorrect answer: 20
Step-by-step explanation
Now according to question
Putting value of a from equation (2) in (1)
We get
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This is a previous-year question from JEE Main 2025, 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.