- #1

- 76

- 1

## Homework Statement

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

## Homework Equations

Answer

n = 50

those numbers are 7 and 8

## 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