bdmo18 jnr
prothom n shongkhok shabhabik shonkhar gor 2018,then n = ?
"God made the integers; all else is the work of man."
Re: bdmo18 jnr
(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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Re: bdmo18 jnr
n=4035 hobe .1/2*(n+1)=2018 ase