the sum of n terms of the series 1+3+5+.....is
botanyliker:
an=n/2{2a+(n-1)2}
an=2n/2{a+n-1}
an=an+n^2-n
sn=an+n^2-n
sn=n+n^2-n
sn=n^2
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Step-by-step explanation:
naturally sum of n odds is n^2
but I done the method hope it helps
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thank S right
my pleasure
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