(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two consecutive numbers from 1,2,3.....n are removed A.M of remaining numbers is 105/4. Find n and those numbers removed .

2. Relevant equations

Answer

n = 50

those numbers are 7 and 8

3. The attempt at a solution

I solved this question like a few weeks ago but now it escaped my brain I have no idea how .. and I am so annoyed now you know how it feels right?

Ok so heres what I got

The A.M of the total numbers would be

n(n+1) / 2 / n

that gives (n+1)/2

now what we get after removing the numbers

let the numbers be x and x+1

therefore their sum = 2x+1

now A.M after removing numbers

n(n+1)/2 - (2x+1) / (n-2) = 105/4

heres one I am not able to figyre out another relation PLease help somebody

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# Sequence and series - Arithmetic mean question have been breaking my head

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