Question

The nth term of an A.P., the sum of whose n terms is S_n, is

Options

•  S_n + S_n−1

• S_n − S_n−1

• S_n + S_n+1

• S_n − S_n+1

Answer 1

A.P. we use following formula,

`a_n = S_n - S_(n - 1)`

So, the n^th term of the A.P. is given by  `a_n = S_n - S_(n - 1)`.