Question

Formula to find the sum of an A.P Sn = n/2[2a +(n-1)d] or Sn = n/2[a+ l]​

Answer 1

Answer:

This is a statement. Can u plz write the question?

Answer 2

Answer:

To Find the sum of an Ap use :- Sn = n/2(2a+(n-1)d