Math, asked by sahalch, 1 year ago

sum of an arithmetic sequence

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Answered by Anonymous

1

SUM OF AN ARITHMETIC SEQUENCE for n number of terms..

⏺️Sn = n/2 [ 2a + ( n - 1 ) d ].

Answered by ds2711agmailcom

1

sn=n/2(2a+(n-1)d) and last term is given sn=n/2(a+l)

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