Math, asked by jaya200678, 6 months ago

If first and last term of an A.P is known then write the formula to find the sum of an A.P.
please tell me.......

Answers

Answered by ramakrishnareddy0277

1

Answer:

the sum of ap

sn = n/2( 2a+(n-1)d)

or n/2(a+ l)

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