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bdmo18 jnr
Posted: Mon Mar 12, 2018 12:22 am
by abrarfiaz
prothom n shongkhok shabhabik shonkhar gor 2018,then n = ?
Re: bdmo18 jnr
Posted: Mon Mar 12, 2018 12:25 am
by abrarfiaz
(1+2+....+n)/n =2018,so : {n(n+1)}/2*n = 2018 ,so: n+1/2 = 2018 ,so: n+1 = 4036 ,so : n = 4035
Re: bdmo18 jnr
Posted: Thu Jan 17, 2019 10:46 pm
by samiul_samin
abrarfiaz wrote: ↑Mon Mar 12, 2018 12:22 am
prothom n shongkhok shabhabik shonkhar gor 2018,then n = ?
This problem is solved
here
Re: bdmo18 jnr
Posted: Sat Jan 19, 2019 11:06 pm
by Safwan
n=4035 hobe .1/2*(n+1)=2018 ase