Math, asked by suhanad57, 11 days ago

write the formula to find the sum of first n term of an ap when the last term is given

Answers

Answered by asihag855

2

Answer:

the formula to find the sum of first n terms of an Arithmetic Progression is S = n2[2a + (n - 1)d]

Answered by ramireddy19894

1

Sn=n/2[2a+(n-1)d] is the formula

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