bdmo18 jnr

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abrarfiaz
Posts: 14
Joined: Mon Mar 20, 2017 4:53 pm

bdmo18 jnr

Unread post by abrarfiaz » Mon Mar 12, 2018 12:22 am

prothom n shongkhok shabhabik shonkhar gor 2018,then n = ?
"God made the integers; all else is the work of man."

abrarfiaz
Posts: 14
Joined: Mon Mar 20, 2017 4:53 pm

Re: bdmo18 jnr

Unread post by abrarfiaz » Mon Mar 12, 2018 12:25 am

(1+2+....+n)/n =2018,so : {n(n+1)}/2*n = 2018 ,so: n+1/2 = 2018 ,so: n+1 = 4036 ,so : n = 4035
"God made the integers; all else is the work of man."

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samiul_samin
Posts: 1007
Joined: Sat Dec 09, 2017 1:32 pm

Re: bdmo18 jnr

Unread post by samiul_samin » Thu Jan 17, 2019 10:46 pm

abrarfiaz wrote:
Mon Mar 12, 2018 12:22 am
prothom n shongkhok shabhabik shonkhar gor 2018,then n = ?
This problem is solved here

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Safwan
Posts: 17
Joined: Tue Jan 15, 2019 8:50 pm
Location: BAU,Mymensingh,Bangladesh

Re: bdmo18 jnr

Unread post by Safwan » Sat Jan 19, 2019 11:06 pm

n=4035 hobe .1/2*(n+1)=2018 ase

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