Math, asked by raghavtayal35074, 7 months ago

what is the sum of an A.P.

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Answered by Anonymous

0

a=first term n=nth term d=common difference Sn=sum of n terms of an A.P. is given by,

Sn=n/2[2a+(n-1)d] = n/2 [a+l] where l= last term of a.p

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