JEE Main 2022MathematicsStatisticsMediumNumerical

JEE Main 2022 — Statistics Question with Solution

JEE Main 2022 (25 Jun Shift 2)

Question

If the mean deviation about the mean of the numbers 1,2,3,……,n, where n is odd, is 5n+1n, then n is equal to ______.

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Show full solutionCorrect answer: 21
Correct answer
21

Step-by-step explanation

We know that mean deviation about the mean of odd natural number is given by M.D x=1nn2-14

So, now 1nn2-14=5n+1n (given)

⇒n-1=20⇒n=21

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About this question

This is a previous-year question from JEE Main 2022, covering the Statistics 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.